If you want some additional space at home, but don't want to extend or convert, then adding a garden room might be the ideal solution. But do you need planning permission for a garden room, or can you build one without?

Ultimately, whether or not you need planning permission will depend on the size and scope of your garden room ideas and where you live.

To help, we've spoken to leading garden room experts about the rules that apply projects like this, and the circumstances when you might need to submit a planning application.

Do I need planning permission for a garden room?

In most cases, you won't need to submit a formal planning application when building a garden room, as they tend to be classed as Permitted Development, provided specific criteria are met.

Becky Harper, Planning Team Leader at Green Retreats, says: ’What’s great about garden rooms is they rarely require planning permission as they are classed as ‘outbuildings’ and, as such, fall within permitted development rights.'

But strict criteria will need to be met.

• Area of outbuildings cannot exceed 50% of total land surrounding the house
• Can be no higher than 4m (pitched roof), 3m (flat roof) or 2.5m (if within 2m of a boundary)
• Cannot be used for business purposes that involve public visits or as self-contained living space
• No verandas, balconies or raised platforms (a platform must not exceed 0.3 metres in height)
• Must sit behind the front wall of the house (cannot be in the front garden).

In order to be classed as Permitted Development, the total area of all outbuildings (including the garden room) cannot exceed more than 50% of the original land surrounding the house. This means that if you have already extended, or already have multiple sheds, you might need to get planning permission for your garden room.

There are size requirements you'd need to meet too. The maximum height for a garden room with a dual pitched roof is four metres, and it's three metres for a flat roof. If you want to locate your garden room within two metres of your property's boundary, then the height cannot exceed 2.5m.

Whether or not you need planning permission will also depend on what you plan on using the garden room for.

Jenny Davis, Head of Marketing for Forest Garden, says: 'Other exceptions where homeowners may need planning permission are if they wanted to use the building independently to the main home, such as for commercial purposes, including running your own business, or as a self-contained property.'

She adds: 'When it comes to amenities, planning rules vary so if you plan to install any plumbing or electricity to the building, do consult your local authority.'

As with any Permitted Development rights, if you live in a designated zone like a National Park, conservation area or Area of Outstanding Natural Beauty, or a listed building, then you're rights may be restricted or removed, so you'll need to apply for planning permission.

It's always best to check with your local planning authority before investing in a garden room to make sure you are compliant with the policies in your area.

Does a garden room need to meet Building Regulations?

Depending on the size and use of the garden room, you don't normally need Building Regulations sign off.

If the floor area is less than 30 square metres, it's not used for sleeping accommodation and it's not within one metre of a boundary, then you should be find to proceed without approval from building control, but do double check before you invest.

FAQs

Can my neighbour object to me building a garden room?

Provided your garden room meets the requirements laid out under Permitted Development, or you have secured planning permission, then you're neighbour can't stop you from adding it.

However, it's always a good idea to keep your neighbour up to date with your plans to alleviate any worries they may have and to maintain your relationship.

What happens if you ignore the planning rules when building a garden room?

If you build a garden room that falls outside of the scope of Permitted Development and you don't obtain planning permission, then you could find yourself facing enforcement action from the local planning authority, which can mean making changes to the garden room, or even having to demolish it altogether.

To avoid that, you may be able to apply for retrospective planning permission. However this can be stressful, and there is no guarantee that consent will be granted.

It's always best to check with your local planning authority before you start building. Reputable garden room providers should be able to advise on the planning rules in your particular case too.

If you want additional space that's attached to your property, then planning a conservatory might be a suitable alternative.

Adding a little extra space doesn’t necessarily mean it has to be directly attached to the main house. An annexe might be the ideal solution. But do you need planning permission for an annexe or can you go ahead without?

Annexes offer a great deal of flexibility and they can either be built from scratch in a garden, or converted from a garage, outbuilding or side extension. A rising number of people are choosing to build or convert outbuildings into annexes for home offices, gyms, guest rooms, and suites for parents or children to move in (affectionately called granny flats).

However, the world of planning permission can be a complex process and often takes longer than the eight weeks guide timeline. So do you actually need it for an annexe or not?

Do I need planning permission for an annexe?

As long as no one will permanently live in the new space, planning permission is generally not required for an annexe, as long as certain Permitted Development criteria are met. However if you live in a listed building or conservation area, you may need a full planning application and approval before construction can begin.

'There are often subtleties on projects either due to site conditions or local planning policies/conservation areas which can have differing views on these structures,' explains Mike Bell, founder of FAB Architects. 'Permitted development is often assumed to be straightforward, but all too often we will find clients who have been caught in the grey areas of planning policy.

'My advice is to speak with a local professional who will be aware of these subtleties and can formulate a strategy. I would always expect to have a formal appointment and pay for initial advice on this as that way the architect will be in a stronger position to assist from both a business and insurance perspective. Local planning consultants are also invaluable at this stage, I will often refer an initial enquiry for an annexe or garden studio in Conservation Areas to a local planning consultant first and then when the principle has been established, work through the design with the clients.'

The motivation of adding an annexe might not just be for visitors, as they're great way of creating a granny flat for elderly parents or even a space of solitude for adult children living at home. If the purpose of an annexe is for a resident to permanently live inside, full planning permission will be required, even if you don’t live in a conservation area or listed building. If you are at all unsure, contact the planning authority for local information.

Do I need planning permission to convert an outbuilding into an annexe?

If you have an existing outbuilding, such as a barn, garage or storehouse, and you would like to repurpose it for use as living quarters you can apply for a change of use under permitted development.

Occasionally, some homeowners take a chance at building an outbuilding before waiting a period of time and then applying for a change of use to circumvent the planning process. This is not a guaranteed concept and may do your plans more harm than good.

Can I convert my standalone garage into an annexe?

You can convert a garage into an annexe and they can be fantastic uses of often redundant spaces. To comply with Permitted Development, it must also not be more than one storey and any larger than 30m2 in floor area, otherwise planning permission for a garage conversion will be required. For a garage on the plot of a Listed Building, planning permission is always required.

FAQs

Can an annexe have a kitchen and bathroom?

Although annexes can indeed have both a kitchen and a bathroom, the installation might add a complexity to the project that needs careful consideration.

Interestingly, there might be implications of having an annexe with separate a kitchen and bathroom that go beyond planning permission.

'Annexes that provide accommodation beyond the remit of ancillary use to the host dwelling may be subject to different restrictions and potentially CIL [community infrastructure levies] charges to the council (which could add quite a bit of unseen cost),' says Mike Bell.

"Many [mortgage] lenders prefer properties with shared utilities due to perceived risks and actually won't lend for properties with annexes that have their own independent utility supplies," adds Luther Yeates, head of mortgages at UK Expat Mortgage. "It's not uncommon for people to be rejected by their current bank when remortgaging with a new annexe without specialised house insurance, too."

Do building regulations apply to an annexe?

Yes, you will need to comply with building regulations when building a new annexe, converting an outbuilding or modifying an existing annexe. This shouldn't be seen as a negative factor to put you off the project, however. Added insulation, ensured safety and a certain level of comfort are all encompassed within the relevant regulations and can prevent issues further down the line.

“I think it's a good principle to view building regulations as rules that are set out to help provide good quality architectural space and comfort. Work with your architect, building control officer (or approved inspector) and builder to ensure this is being provided in your new space,” comments Mike Bell.

If a separate annexe isn't the right option for your home, you could try building an extension or converting your loft to get the additional space you need.

If your goal is to establish a home with fresh, sun-soaked interiors, it’s likely you’ve already considered upgrading your windows to maximise the amount of sunshine coming in, or even toyed with the idea of installing completely new openings.

It’s possible that changing the exterior of your house – including replacement windows – might trigger the need to apply for planning permission from your local council. But when it comes to planning matters, things are rarely clear cut.

We spoke to the experts to find out whether it’s possible to change your windows without the need to make a full planning application, and the various factors that might affect what you’re able to do.

Do I need planning permission to change my windows?

Typically, if you’re switching existing windows with like-for-like replacements, planning permission is not required. If you’re replacing the windows on a house, providing your new windows are ‘similar’ in appearance to the original set – essentially, with frames of the same size and colour overall – you would usually be allowed to proceed without submitting a planning application.

Rules tend to allow you to change the material of the frames, providing the new ones still look similar to the originals. For instance, if you plan to switch timber frame windows for wood-effect uPVC units.

This is because changing your windows is one of those home improvements that falls under what’s known as Permitted Development. This set of rules was introduced to simplify and streamline the process of various home improvement projects, making numerous upgrades possible without the need to go down the formal planning permission route.

'Flats, however, do not have the same rights,' says Stephanie Dale from Studio Webster Dale. 'You can only replace windows without permission if they are exactly like for like. Leaseholders should also obtain permission from their freeholder.'

However, before going ahead and installing your replacement windows, it’s important to check whether Permitted Development (PD) rights actually apply to your property. For instance, if you live in a designated zone such as a Conservation Area or an Area of Outstanding Natural Beauty, PD allowances do not apply.

'If you live in a listed building then you will always require Listed Building Consent to change windows,' says Stephanie. 'It is a criminal offence to make changes to a listed building without it.' If in doubt, always touch base with your local authority before making any changes to the exterior of your property.

Do I need planning permission to add a new window opening?

As in many scenarios where planning permission is concerned, the frustrating answer to this question is – it depends.

If you’re the owner of a house, it is possible to create a new opening under PD rights providing it follows a similar style to your existing windows. Bear in mind, there’s usually more leeway if you’re installing a new opening to the back of the property rather than the front.

'If the windows are of a similar size and appearance, this falls within PD rights. However, if they significantly differ in appearance or size, it’s worth checking beforehand with your local authority,' says Collette Raine from PAD Studio.

'An example would be that a bay window would be treated as an extension, or if you were inserting four windows of random sizes and colours,' says Collette.

Most authorities would also require you to apply for formal planning permission if you’re inserting a new window opening facing the highway (ie likely on the same side of your house as your front door). This is why there’s a little more wiggle room when it comes to making changes at the rear of your property.

You can check the full criteria of what’s possible under planning permission via the Planning Portal or by contacting your local authority directly.

Do I need planning permission to change a window to a door?

As with above, there’s a lot more scope to make alterations to the rear of your house rather than the front. And that applies if you want to change a window into a door

'If you’re looking to make these changes to the back of your property, then you would not normally need to obtain planning consent,' says Darren Bray from Studio BAD. 'However, you probably would if you were making changes to the front elevation.'

Regardless of the position of the changes you’re making in terms of window/door openings, physically altering the building in this way would require sign off from Building Control.

Can I put a new window on the side of my house without planning permission?

In some instances, it is possible to fit a new window on the side of your house in accordance with the parameters set out by Permitted Development. However, any new side window that could have an impact on the privacy of a nearby building will need careful consideration.

'Permitted Development rights state that windows on any upper floor, located either in a wall or on the roof slope forming part of a side elevation overlooking a neighbour, should have obscure glazing,' says William Tozer of William Tozer Associates.

'It should not be openable if the window is less than 1.7m above the finished floor of the room in which the window is being installed,' says William.

Does double glazing require planning permission?

In the drive to slash energy bills, upgrading single glazed windows to double- or even triple-glazed units will provide an additional barrier to help keep precious heat inside your home.

'To simply change the glass from single to double-glazing shouldn’t require permission – unless you’re in a listed property or Conservation Area,' says Matt Higgs from Kloeber. 'If so, there may be restrictions on the exact thickness of glass that can be used so the appearance remains in keeping.'

That doesn’t mean it isn’t possible to switch single-glazed units for units that offer better thermal efficiency – your local planning officer may just require detailed drawings, and potentially samples, to see the proposed design of your new units.

There are also alternatives for homeowners that can’t upgrade to double-glazed windows. 'You will often see original windows that cannot be replicated in double glazing eg an historic stained-glass window,' says William.

'In this scenario you could consider secondary glazing as an alternative. This solution is considered an appropriate alternative for listed buildings as it is not permanent, whilst also providing great insulation qualities and sound proofing,' says William.

FAQs

Do building regulations apply when changing or adding new windows?

Building regulations always apply when changing or adding new windows. When it comes to getting the work signed off, there are two possible routes you can take.

'You can either get the windows installed by a registered company that can self-certify through recognised bodies like CERTASS or FENSA, or you can have building control sign off the specification and installation,' says Matt from Kloeber. FENSA, for instance, is a government-authorised scheme that monitors quality to ensure installations comply with the standards laid out by building regs.

'There’s no right or wrong way of doing this,' says Matt. 'If you’re having other building works done, it will be signed off by building control as part of the complete works, so you may not need the installer to certify.'

What action should I take if I’m unsure about changing my windows?

If you have any concerns that upgrading your windows might be contentious from a planning perspective, contact your local authority to double check. Even if the works do fall under Permitted Development, it’s always worth obtaining a Certificate of Lawful Development for peace of mind.

'This certificate essentially says that the works did not require planning permission,' says Stephanie from Studio Webster Dale. 'You are likely to require this document if you ever come to sell the property.'

If it turns out you do need planning consent to make the changes to your windows you want, you might find consent comes with planning conditions attached. These will need to be followed otherwise the permission will be withdrawn.

Solar panels are no longer viewed with the same suspicion they once were. They are now one of the most recognisable forms of renewable energy, seen gracing the roofs of all kinds of homes, both old and new.

That said, the issue of planning permission for solar panels can still put some people off.

'The installation of solar panels on domestic properties is an increasingly popular and practical solution for homeowners seeking to reduce energy bills and embrace sustainable living,' says professional planning consultant Simon Rix, founder of Planix.uk.

If you are considering installing solar panels but are worried that you'll have to go through an arduous planning application to do so, our guide is here to answer any questions you might have.

Do I need planning permission for solar panels?

The good news here is that, in the majority of cases, planning permission won't be required in order to install solar panels. In fact, it's one of many home improvements that won't need planning permission.

'Fortunately, under Class A of permitted development rights, most homeowners can proceed without the need for planning permission,' says Simon Rix. 'This applies to houses, bungalows and even blocks of flats, whether panels are installed on the building itself or within its curtilage.'

If you are in any doubt, you can contact your local planning officer to check before going ahead with the project.

'While permitted development rights empower homeowners to embrace renewable energy without the complexity of full planning applications, understanding the associated restrictions remains crucial,' explains Simon Rix. 'As always, for clarity on legislation or assistance with applications, I always say, talk to a good planning consultant.'

What are the planning rules around solar panels?

While most homeowners looking to make savings on their home energy won't need to worry about planning permission for solar panels, there will always be exceptions.

'It’s important to be aware of limitations, particularly in protected areas,' explains Simon Rix. 'Homeowners in Conservation Areas or Areas of Outstanding Natural Beauty (now called National Landscape areas) must seek prior approval if installing panels on flat roofs. Additionally, installations on listed buildings or scheduled monuments remain prohibited without a full planning application.'

This doesn't necessarily mean that you won't be able to have solar panels installed – but you will have to go through the planning process, or get listed building consent, before you can start installation.

'A notable update came into effect in December 2023 (SI 2023/1279), allowing solar panels on flat roofs to protrude up to 0.6m above the highest part of the roof, excluding chimneys,' adds Simon Rix. 'This extension offers greater flexibility for properties with flat roofs, making solar installations more accessible.'

What happens if permitted development doesn't apply to me?

As mentioned previously, there are certain cases where planning permission will be needed in order to install solar panels, but this doesn't spell disaster – a different approach just might be required.

'Where permitted development rights don’t exist, then a full planning application can of course be made,' says Simon Rix. 'I’ve recently got permission for one of my clients via this route for a set of ground-mounted solar panels within the garden of a listed cottage, which is also in a Conservation Area, so it’s definitely possible.'

In fact, ground-mounted solar panels can be the perfect option for those living in homes that might be restricted in terms of planning permission for roof-mounted panels and may even add value to your home.

'For properties where roof-mounted panels are not feasible, Class B permits stand-alone solar panels within the property’s curtilage,' explains Simon. 'The recent update under SI 2023/1279 also enables stand-alone panels to be installed closer to highways within Conservation Areas, provided they do not exceed 2 metres in height and are subject to prior approval.'

Can a neighbour object to solar panels on my house?

Even after finding out that planning permission won't be required for solar panel installation, many people still have concerns surrounding objections from their neighbours.

Luckily, even if neighbours do raise concerns, providing you stick to your permitted development rights, these objections cannot actually prevent you from going ahead.

That said, even if their objections will have no effect on your project, it pays to inform them of your plans in order to avoid any bad blood, just as is the case with party walls. Discussing issues such as shading and the visual impact the panels might have often goes a long way towards alleviating any concerns.

In some cases, taking steps such as adjusting the angle of panels, can also help.

Do building regulations also apply to solar panels?

While planning permission might not be required in order for you to install solar panels, building regulations approval most certainly will, just as it is for most renovation and home improvement jobs.

The good news is that in most cases, if you use an installer who is part of a Competent Person Scheme for microgeneration technology, they will be able to submit a building regulations application for you.

The building regulations that relate to solar panels focus on structural safety, electrical safety and ventilation, in the main.

FAQs

Can you install solar panels yourself?

If you have been looking into how much do solar panels cost and are keen to make savings, it is now possible to purchase solar panel kits designed to be fitted on a DIY basis. These usually come complete with solar panels, controls, the hardware needed for mounting them as well as the wiring and fixing needed to get them up and running.

If you are a confident DIYer, suppliers of these kits say that they are not overly complicated and they usually come with detailed installation instructions.

Do check with Building Control in your area whether or not they will need to sign off the installation. In some cases, failing to do so could mean you run into difficulties later down the line when you come to sell your property.

If you are considering solar panels as a way of making savings on your home energy bills, don't forget to look into whether or not your insulation could be upgraded – this can have a huge effect on the energy efficiency of a property.

In the drive to find alternative fuel sources to heat the home, it might be that you’ve already considered a heat pump to replace your conventional gas-fired boiler. But do you need planning permission to install a heat pump or can you go ahead without?

Powered by electricity, heat pumps work in a similar way to fridges – just in reverse. Depending on whether you install an air or ground-source appliance, your heat pump will extract warmth from the air or ground and concentrate it into a usable, higher temperature warmth that can be used for your home’s heating or hot water.

While this piece of renewable kit can typically be installed under Permitted Development rights – which means you don’t need to apply for formal planning consent – there are still various rules your installation should follow.

Here, we take a closer look at the guidelines you should adhere to to ensure your installation falls under the PD umbrella, as well as exploring some of the most common questions around heat pumps and planning.

Do I need planning permission to install a heat pump?

The short answer to this question is no – you don't usually need planning permission for a heat pump. But as with anything to do with planning, there are always exceptions and caveats to bear in mind before charging ahead and installing your new tech.

Permitted Development (PD) rights were established to allow homeowners to make changes to their property without the need to apply for formal planning permission, thus making the process for various home improvements simpler and more streamlined.

'PD rights allow you to install either a single ground source or single air source heat pump without having to submit a planning application – however, this is caveated by your property’s location and character,' says Collette Raine, architect and creative manager at PAD Studio.

'Listed buildings and properties in designated areas [eg conservation areas, Areas of Outstanding Natural Beauty etc] will need to apply for permission due to their sensitive nature.'

According to planning policy, there are parameters that every PD installation of a heat pump should fall into. 'The unit can be no larger than 0.6m3, it must be used solely for heating and hot water purposes and it can be no taller than 3m,' says Richard Gill, a director at Paul Archer Design.

In addition, the unit must comply with the Microgeneration Certification Scheme Planning Standards MCS020 and it should be located at least one metre from the boundary of your home – though we’ll cover this in more detail later.

If you’re in doubt, you can check the Planning Portal for more details or speak to an MCS-certified installer for the most up-to-date advice.

How far does a heat pump have to be from the boundary?

Current guidelines stipulate that your air source heat pump should be positioned at least one metre from the boundary of your property. 'Though, we are expecting this rule to be removed very shortly,' says Ali Cox, senior sales project manager at Kinectid.

It was announced by the government in November 2024 that the one metre rule would be abolished early this year to make heat pump installations easier. 'This news will be very welcome in the industry,' says Ali. Though, as of February 2025, the one metre rule is still in place.

It’s also worth noting that the guidelines in England, Wales and Scotland are slightly different. For instance, in Wales the unit needs to be more than 3m from the boundary. Always check current planning rules with your local authority to be sure.

'Regulations are less specific on ground source heat pumps, as they’re generally located within your property,'says Collette from PAD Studio. 'But the amount of excavation work required is worth considering with the site and area you have, as there are Permitted Development rules against how close you can excavate near boundaries.'

Again, if in doubt, double check with your local authority.

Can a neighbour object about me installing a heat pump?

If your heat pump ticks all the boxes in terms of noise output (42 decibels or less), distance from the boundary etc, your neighbours should not be affected by the installation. But as always, there are some potential caveats to this.

'Environmental health regulations mean a neighbour can, of course, complain if they feel your heat pump is disturbing the enjoyment of their own home. This could lead to a potential enforcement letter from the council if they deem the complaint valid,' says Rob Elkins, creative director at Artel31.

However, providing your system is well-placed, well-maintained and has been installed by a certified professional, this scenario is highly unlikely to arise. It’s also worth bearing in mind that if your neighbour’s issue is focused on the low humming noise emitted by your heat pump, you might be able to install an acoustic enclosure to help minimise the sound.

Where should you not install a heat pump?

Typically, most heat pumps – both air and ground source – are installed in the back garden of the property in a discreet location where they don’t stand out. 'Having said that, we have installed some in the front garden where this is not possible,' says Ali from Kinectid. 'We check with local planning authorities to ensure this is compliant, as some boroughs have stricter rules than others.'

It’s probably fair to say that appearance-wise, a heat pump isn’t going to do much to add to the aesthetic appeal of your home – especially if you live in a traditional, cottage-style build or a rural property. Therefore, positioning the appliance in a discreet, out of the way location is probably the best way to avoid drawing attention to it.

If you’re working with a professional designer on a bigger home improvement project, they might even be able to design a stylish enclosure that keeps the heat pump neatly tucked out of view.

'From an environmental health perspective, despite becoming much quieter recently, heat pumps still hum when running – especially in cold weather when they need to work harder,' says Rob from Artel31. 'As such, if you’re siting a GSHP unit internally make sure it’s located away from bedroom walls and try to lobby the plant space.'

FAQs

Are there noise regulations for heat pumps?

42 decibels (dB) is widely accepted as the maximum noise output allowed for your heat pump installation to fall within the parameters laid out by Permitted Development. However, depending on the environment in which the heat pump is installed and the potential number of reflective surfaces around it (which will be greater in urban areas), the picture becomes a little more complex.

'Manufacturers’ data is predominantly quoted ‘free field’ without reflective surfaces that can add as much as 3dB each,' says Rob from Artel31.

So, if you’re concerned that the humming noise emitted by your heat pump will become an issue for you or your neighbours, take action to minimise the likelihood of this happening. For instance, an acoustic enclosure could be a great help in this scenario.

What if I do need to apply for planning permission?

For whatever reason, if you do end up needing to apply for planning permission for your heat pump, it’s worth getting your neighbours on side before they receive formal notice of your plans from the council.

In many cases, a friendly conversation and – perhaps – a bottle of wine early on in your project can work wonders in paving the way for a smooth road ahead.

If you are looking to make other significant alterations to your home, there are a wealth of other improvements you can make without needing planning permission.

If you already made significant changes to your home, and it now transpires that you should have sought permission from the local planning authority, then you'll need to understand what retrospective planning permission is so you can put things right.

Knowing when you do and don't need planning permission can be complicated, as it depends on various factors including where you live, what work you plan on doing, and the alterations that have been made to your home previously.

But if it turns out you should have submitted a planning application and you didn't, then you have options available to you that could save you from having to undo the changes you've made

What is retrospective planning permission?

'Retrospective planning permission is when you’re trying to get approval for work that’s already been done without permission,' says Jason Corbett, owner of Rowallan Buying Agents. 'It can be a pretty long and complicated process, taking anywhere from 8 to 13 weeks.'

Robert Quinton, home improvement expert and owner of Construction Megastor, adds: 'This often happens when homeowners realise they've made a mistake, or if they are asked by the local authority to apply for permission after changes have been noticed.'

Ideally, you would submit your planning application and gain consent before the work starts. But if you didn't, then retrospective planning permission is the way to go to make your work lawful. This will be necessary if you want to avoid enforcement action that could involve undoing the changes you've made at your own expense, and if you plan on selling your home in the future.

How difficult is it to get retrospective planning permission?

The process of securing retrospective planning permission can be challenging. Robert says: 'The process can be complex, as it requires submitting detailed plans and justifications for the unauthorised work.'

You will need to justify why planning permission wasn't obtained before the building work began, which can be a lengthy and stressful process.

Can a retrospective planning application be refused?

Just because the building work has already been done, it doesn't mean that you will automatically be granted retrospective planning permission. In fact is it far from guaranteed.

If the work fits within national and local planning policy frameworks, then your request for retrospective planning permission would be granted.

However, if it doesn't then you could be required to make changes in order to secure permission, or undo all of the changes you've made and revert your home to its previous state. After you've already forked out to make the alterations or additions in the first place, this can mean further significant costs.

FAQs

What is the 10-year rule for retrospective planning permission?

There are time limits for the local authority can issue enforcement notices, and nothing is issued during this time, then the work effectively becomes immune from enforcement action. But these time frames depend on the type of rule breach and when the work was done.

If the work was completed on or after 25 April 2024, then enforcement action must be brought within 10 years. For work completed before 25 April 2024, the time frame is four years.

However, there are certain circumstances where these time limits do not apply. This can include where there has been 'deliberate concealment of a breach'. You can find full details on the government website.

To avoid all of these potential issues (and the stress), make sure you always check with your local planning department or work with a planning consultant to determine if your proposed project requires you to submit a planning application.

If it does make sure you submit it, and gain approval before you start any building work.

If your project doesn't need planning permission, then it probably falls under the scope of Permitted Development. It can be useful to apply for a Lawful Development Certificate to confirm this, especially if you plan on selling your home in the future.

Finding out whether or not you need planning permission for VELUX windows will be an important part of your research process. You'll also find that although the term VELUX window is often used as a synonym for rooflights, it technically refers to those manufactured by the company. But regardless of the manufacturer, the planning rules around rooflights will be the same.

Roof windows are a brilliant solution for anyone struggling to find ways of getting lots of natural light into a house where regular windows might not be an option, for example if they may cause overlooking or not be permitted by your local planning office.

We reached out to the experts to find out when and why you will might to apply for planning permission to fit a VELUX window – and the instances where it won't be required.

Do I need planning permission for VELUX windows?

The good news here is that, in many cases, you won't need to apply for planning permission in order to fit VELUX windows or rooflights – but this won't always be the case, say if you are building an extension in a designated area.

'An important step in any home conversion, renovation or extension is investigating what planning permission and building regulation standards would apply to your plans,' says Barbara Entwistle, project development manager at VELUX. 'Different rules apply for listed properties or if you live in a Conservation Area – it’s always worth checking the limitations of your space.

'If you are unsure whether you need planning permission to install your roof window, your local planning office or a planning consultant should be able to advise you,' continues Barbara. 'If in doubt, speak to the Local Authority, they are there to help you and make sure that, if you do need planning permission, your property is checked and looked after from inception to completion."

Do VELUX windows fall under Permitted Development then?

Permitted Development allows homeowners to make improvements and add some extensions without applying for planning permission, although a set of conditions will need to be met.

'Skylights can typically be installed under Permitted Development (PD) rights, provided they do not protrude more than 150mm from the roof plane and are not in a protected area or part of a designated heritage property,' explains Simon Rix, director and senior planning permission consultant at Planix.uk. 'Of course, if it’s a listed building, then listed building consent would definitely be needed.'

You may be pleasantly surprised to learn that it isn't just rooflights that sit flat to the roof that can be installed under Permitted Development rights either.

'Roof lights that feature two opening sections that create a temporary balcony when extended, with side rails for safety, such as the VELUX Cabrio balcony, can potentially be installed using PD too, when they protrude no more than 150mm, because they function similarly to top-hung Velux windows,' says Simon Rix. 'In August 2015, an appeal inspector ruled that the installation of one of these units was permitted development for that project.'

When will planning permission be needed for VELUX windows?

As we mentioned, there will be cases where Permitted Development won't apply, in which case planning permission will be needed.

'Remember, if you are in a Conservation Area, your right to install a skylight without a planning application may have been partially or completely removed, in which case a planning application will be needed,' explains Simon Rix. 'I always say, check with a planning consultant before you act.

'VELUX have a new range of Heritage windows with slim black profiles that look really good but also fit well into older properties,' adds. Barbara Entwistle.

Do building regulations also apply to VELUX windows?

Just because you may have found out that you can fit your roof windows without applying for planning permission, do not assume that building regulations approval won't be required.

'Even if you do not require planning permission, you will likely need to comply with building regulations to ensure the work meets a minimum standard,' explains Barbara Entwistle. 'Additionally, if you share a wall with a neighbour you may need to give them two month's notice prior to commencing work. Even if you don’t, it is definitely worth having friendly chat with your neighbours to talk through your plans and help the renovation process go smoothly. Communication is key, especially if you live within close proximity to another property.

'Building work is intrusive and does cause some disruption, so manage expectations, inform your neighbours and keep things cordial,' adds Barbara.

FAQs

Can you put a VELUX window on any roof?

Providing you have successfully gained planning permission approval then you can install a VELUX window. However, you need to ensure the window you have selected is the best option.

There was a time when those with very low roof pitches might have struggled to find a roof window to suit, but this is no longer the case.

'Low pitch roof windows are specifically designed for roofs with pitches as low as 10°, ensuring optimal performance even in low-slope applications,' explains Barbara Entwistle. 'This kind of window works well where you are limited by the pitch of roof.'

Roof windows work well in all kinds of applications but can be particularly useful when it comes to side extensions where overlooking can be an issue.

When you extend your home, there are lots of rules and regulations you need to adhere to, which can be daunting as a homeowner. But you might be able to eliminate some of the red tape by knowing what size extension you can build without planning permission.

The rules around planning permission for an extension can be complex, and depend on various factors like where you live and any previous work that has been done to your home. But in some cases, your proposed addition might be classed as Permitted Development (PD), which means you can avoid the planning permission process altogether.

If you're planning on building an extension, we've broken down the PD criteria as a guide to what size extension you could build, but always check with your local planning authority before you start building to make sure they apply to your specific project.

What size extension can I build without planning permission?

How big an extension you can build without needing planning permission will depend on how much space has previously been added to your home, where you want to put the extension, and where you live. Robert Quinton, director of Construction Megastore, says: 'For example, the extension must not use more than half the surrounding land, exceed certain height limits, or include features like verandas or chimneys. Homes in conservation areas, listed buildings, or properties that have been extended since 1948 also might not qualify.'

PD rules are strict and can be complicated so it can help to choose an architect that is familiar with local planning policy to help bring your extension ideas to life. You could also work with a planning consultant to make sure your scheme follows the criteria.

Even if you don't need planning permission for your project, you will need to meet the requirements of building regulations for extensions to make sure it's built correctly.

Here are the rules you need to know:

1. Single-storey rear extensions

At the back of your house, you can add a single-storey extension under Permitted Development, as long as it…

• Doesn’t exceed 4m (for detached properties) from the original back wall (or 3m if your property is not detached). Recent changes to PD rights mean you can now build a rear extension by up to 8m (for detached houses) and by 6m (if not detached) with prior approval under the neighbour consultation scheme;
• Is less than 4m in height;
• Is no more than half the width of the original house;
• In Northern Ireland, a single storey rear extension should be within 3.5m of the rear boundary if the house backs onto a road.

2. Two-storey rear extensions

You can build a two-storey extension at the back of your house without planning permission, provided you meet the PD criteria.

• It can’t go more than 3m beyond the rear wall of the existing house;
• It must be a minimum of 7m away from any boundary opposite the rear wall of the house (10m in Scotland and 10.5m in Wales);
• It has to be less than 4m high;
• Materials used on the exterior should be similar to those on the existing house;
• Eaves and ridge height should be no higher than the original property (eaves should be no higher than 3m if within 2m of a boundary);
• Roof pitch should match the existing house where it is possible;
• Any windows on the side elevation of the rear extension must use obscured glass, and be fixed, unless the opening is more than 1.7m high from the floor of the room it's in;
• Can't be located in a designated area, such as an Conservation Area, Area of Outstanding Natural Beauty or a National Park.

If you want to add a second storey to an existing single-storey extension, this won’t be possible under Permitted Development Rights if the existing addition extends beyond the rear wall by more than 3m, instead you'll have to look into acquiring planning permission for an extension.

3. Side extensions

You can build a side extension without planning permission, but only if it is

• Single storey and less than 4m in height (less than 3m if it is within 2m of a boundary;
• Not built between the property and a highway;
• No more than half the width of the original house (at its widest point).

A side extension would need planning permission if it extends beyond the side wall and is more than half the width of the house.

There are different rules about side extensions in Wales – for example, two-storey structures are possible under Permitted Development. Check with your local authority or architect if you are unsure.

4. Rear and side extensions

Tread carefully in cases where both the rear and side wall will be pushed out, as the restrictions on both apply here – and it can get complicated! In order to qualify as PD, your extension must…

• Extend no more than 6m beyond the rear wall (or 8m for a detached house);
• Be one storey, not more than 4m high (or no more than 3m if within 2m of a boundary)
• Have a total width that’s not more than half the width of the house.

This makes side return extensions, where you’re filling a space between the rear and side wall to square off the footprint, doable under PD. Two separate extensions are also possible but connected, wraparound extensions will exceed the width restriction and require planning permission (unless you’re in Wales, where the ‘half the width’ rule does not apply).

How high can I build an extension without planning permission?

There are rules under Permitted Development when it comes to the height and roof of an extension.

When you extend your home the extension can't be taller than the tallest part of the original building. The roof pitch of a two-storey extension should be the same as the pitch on the original roof, as far as is practical, too.

The height of the eaves needs to meet certain criteria as well. The Permitted Development guidelines say: 'For the purpose of measuring height, the eaves of a house are the point where the lowest point of a roof slope, or a flat roof, meets the outside wall.'

FAQs

When does an extension require planning permission?

If you want to build something outside of the scope of Permitted Development, then you will need to submit a planning application.

Similarly, if you live in a designated area or a listed building, it's highly likely that your Permitted Development rights will be restricted or removed completely, which means you would need to apply for planning permission to build an extension, even if you wouldn't have to if you lived elsewhere.

PD rights are based on the property as it stood on 1 July 1948 (or as it was originally built, if it was built after July 1948). If you're home has been extended in the past, even by previous owners, you may also find that you've used up your Permitted Development rights, which again means you'd need to apply for planning approval if you wanted to add more space.

Even though we've said this before, always double check whether your extension can be built under PD before you start. Once built, if it turns out you actually needed planning approval, you may be able to apply for retrospective planning permission. But there is no guarantee that this will be granted, and you may end up with a fine or having to demolish what you've built.

If the planning rules are making your project unviable, then you could weight up an extension vs a loft conversion to see if there is an alternative way to get the additional space you need.

If you are looking to expand your home, there are various ways you can do it. But for those looking for additional space upstairs, converting the loft can be particularly ideal. But do you need planning permission for a loft conversion?

Unfortunately, it is not the most straightforward question to answer. If a loft conversion is on your wish list, whether you need planning permission or not will depend on a few different factors. 'The need for planning permission for a loft conversion can vary based on the type of property and its location,' says Rob Wood, managing director at Simply Loft.

If you're set on your loft conversion ideas to add space without extending the footprint of a house (they're usually cheaper to complete than an extension too) then you'll need to understand when you might need planning permission, and when you can move forward without it.

Do I need planning permission for a loft conversion?

This is a complex question to answer, as whether or not you need planning permission to convert your loft will depend on where you live, the specifics of your project and whether your home has undergone significant extensions in the past.

In many cases, you won't need to submit a planning application before you convert a loft. This is because this kind of project is often classed as Permitted Development.

But this isn't a blanket rule, especially if your home is located in a designated zone like a National Park or Area of Outstanding Natural Beauty. So you'll need to check with your local planning authority before you start.

Professional planning consultant Simon Rix, founder of Planix.uk explains: 'To ensure your loft conversion falls under Permitted Development, it’s important to first verify that your home is eligible, taking into account any previous developments or extensions, and whether your home is located in a designated area where such rights don’t apply.'

It can be a huge mistake to just assume your project will fall within your Permitted Development rights because your neighbour didn't have to apply for planning permission for something similar.

'Certain criteria must be met to qualify, such as ensuring the conversion doesn’t exceed specific size limits or alter the roof's highest point,' adds Simon Rix. 'Even if your project meets these criteria, it's advisable to apply for a Lawful Development Certificate from your local council to confirm that planning permission isn't required. This certificate not only provides peace of mind but also serves as a valuable document for future property transactions.'

Can I convert my loft without planning permission?

You won't always need planning permission to covert your loft, as it may be classed as Permitted Development instead. In order for your loft conversion project to fall within the scope of PD, it will need to meet a set of strict criteria:

• Size: If you live in a terraced house, your design should not increase the size of your roof space by more than 40 cubic metres. In other types of houses, this increases to 50 cubic metres.
• Roof height changes: You can't make the existing roof any higher than it is already without planning permission.
• Chimney alterations: Without planning permission you can't add, alter or replace any existing chimneys or flues.
• Window placement: Under permitted development, any new windows to the side of the conversion must be obscured.
• Positioning: Unless you are carrying out a hip to gable loft conversion, your new addition will have to be set back a minimum of 200mm from the eaves. You will also not be allowed to extend the roof more than any existing roof slope that can be seen from the principle elevation.
• Balconies: Balconies, with the exception of Juliet balconies, cannot be constructed under permitted development.

However, if your project should have planning permission and you go ahead without it, then that's a different story.

You could submit a retrospective planning application, but there is no guarantee that permission will be granted. By not having the correct permissions in place, you could face a hefty fine, legal action and even end up having to undo all the work, which could leave you thousands of pounds out of pocket.

When will a loft conversion need planning permission?

If your proposed loft conversion scheme falls outside of the Permitted Development criteria, or you live in a designated area, you will most likely need to apply for planning permission.

'For houses in designated areas, such as conservation areas or those considered listed buildings, additional planning consent is usually required,' explains Rob Wood. 'These areas often have stricter regulations to preserve the character and appearance of the local neighbourhood and community.'

'The design itself must adhere to specific limits regarding the size, materials used and impact on the roof structure,' picks up Simon Rix.

'If your project involves significant alterations, such as with a mansard loft conversion or the addition of a balcony, a full planning application will be necessary. Using a good planning consultant can help navigate these complexities and avoid costly errors, ensuring your project proceeds smoothly.'

'It is important to consult your local authority’s guidelines along with speaking to a professional or an architect about the size and type of your loft conversion,' points out Rob Wood.

FAQs

How do I apply for planning permission for a loft conversion if I need it?

If you find that planning permission is going to be needed for your loft conversion, you can make an application through the Planning Portal or via your local authority's website.

You'll also want to read this tips for securing planning permission first time round to optimise your chances of success (and get you through the process as quickly as possible).

You will need to bear this in mind when budgeting for your loft conversion costs as you can expect fees of around £250 and a service charge of £70.

If you converted your loft without the required consent, you could apply for retrospective planning permission. But this is a huge gamble as there is no guarantee your application will be approved, and you may be required to make changes to, or undo, the work you have done.

Can a neighbour stop my loft conversion?

If you live in a terraced or semi-detached property, might be worried whether your neighbour can stop you from converting your loft.

While they can't stop you from doing the work, provided it meets the criteria of Permitted Development, or that you have the necessary permissions and notifications in place, they can cause delays and stress.

The best way to avoid this is to communicate your plans with your neighbours early on, listen to any concerns they may have, and see if you can reach a mutual agreement that puts their mind at ease without compromising on your plans.

If disagreements arise regarding the party wall, then you may need the help of a party wall surveyor to put them to bed.

Does my loft conversion need building regulations approval?

Regardless of whether your project needs planning permission or not, it will still need to comply with loft conversion building regulations.

'Building regulations cover aspects such as fire safety, structural stability, insulation, ventilation and accessibility,' explains Rob Wood. 'Compliance with these regulations ensures that the loft conversion is safe, energy-efficient, and in line with established building standards.'

If you use an architect or specialist loft conversion company they will help you ensure your project meets all the requirements of building regulations. This could include, for example, adhering to rules around the installation of a new staircase or following fire door regulations.

Do I need a party wall agreement for a loft conversion?

If your loft conversion involves any walls that are shared with another house, you should get a party wall agreement. This is sometimes the case when a conversion requires a new structural beam to be inserted into the shared wall.

'As well as planning permission for your loft conversion, you’ll also have to consider a party wall agreement before work can begin on your project,' advises Rob Wood. 'This is an agreement amongst neighbours if you share a wall or are close in proximity to your neighbouring properties that the construction is accepted by the neighbour.'

You can either serve a Party Wall Notice to your neighbour(s) yourself, or use a Party Wall Surveyor.

Do I need planning permission to board my loft?

If you want to board your loft to use it as storage space, then you won't need planning permission. But if you are worried about the strength of any joists, then it is best to get a professional to assess the space.

Boarding a loft could be tackled by an experienced and competent DIYer, but if you've not done anything like it before, it's definitely best to pay a professional to do it for you.

A loft conversion won't be right for everyone and in some cases building an extension - either single or double storey - is the only way to get the additional space you need.

Even if you decide not to convert your loft into habitable space, you should still make sure it is properly insulated in time for winter.

Are you planning on converting your loft? Let us know in the comments below.

While we’re all guilty of making impulsive garden decisions, buying or building a pergola isn't something you should take lightly - especially when you need to understand whether you’ll need planning permission for a pergola or not.

Yes, it’s incredibly easy to be drawn in by the many incredible pergola ideas out there, and it’s even easier to grab your credit card and buy a ready-made pergola or build-your-own kit online. But we’d suggest taking a breath before splurging on a new garden addition, as there are many things you should consider before building a pergola.

For starters, you need to figure out whether you need planning permission. And while you might think that you're in the clear, there are certain instances where you do need planning permission for a pergola. And the last thing we want is for the council to come along and force you to tear it down.

Do I need planning permission for a pergola?

Just as you would double-check planning permission for fences and planning permission for porches, you also need to understand whether you need planning permission for a pergola. After all, there isn’t a one-size-fits-all answer to this question. That’s because most pergolas will qualify under permitted development… but some exceptions exist. So, you need to ask yourself the following questions:

1. How big will the pergola be?

Pergolas come in so many different shapes and sizes, ranging from small corner pergolas to larger pergolas designed to cover outdoor kitchens. And the size of the pergola will ultimately impact whether you need planning permission or not.

Ashley Hainsworth, Director of Cuckooland, explains, ‘You will need to seek planning permission from your local council if the pergola takes up more than 50% of the land around the existing building.’

This is something you seriously need to consider if you have a small garden, as you’ll either need to buy or build a pergola that’s less than half the size of your garden or deal with the costly and potentially lengthy process of obtaining planning permission.

2. Where will you build the pergola?

While the size of your pergola matters, the height and location of your pergola should also be considered before installation.

The rules state that it’s possible to install a three-metre high pergola in your garden without planning permission (and four metres for a pitched roof pergola), but this rule only applies IF you’re building it over two metres away from a neighbouring fence or boundary.

If you’re planning on building a pergola within two metres of your neighbour’s fence or boundary of your home, it can only be two and a half metres high.

Because of this, it’s always best to position your pergola in the middle of your garden or as far away from your neighbours as possible.

Of course, we also understand that some people don’t want to put a pergola in their back garden. But if you’re planning on building a pergola to upgrade your front porch ideas, planning permission may be necessary.

Reilly Gray, Co-Founder at Suns Lifestyle, explains, ‘It may also be required if the pergola is going to be installed to the front of your home, as placing one near the street could be seen as impacting the external appearance of the home.’

With all of this in mind, it’s always a good idea to decide where you’re going to place your pergola before buying it. And, if possible, Sam Jenkinson, pergola expert at Tiger Sheds, suggests seeking advice from a professional.

He says, ‘For the nitty-gritty details tailored to your specific situation, it's always best to chat with your local planning authority or consult a pro.’

3. Where do you live?

While it would be easy to assume that anyone who lives in a house and has spare outside space can build a pergola without planning permission, that’s not the case. Where you live, and even the house you live in, can also affect whether you need planning permission or not.

Reilly explains, ‘If you live in a conservation area or if the structure will be installed to the side of your house between the property and the boundary, you will likely require planning permission depending on the height and permanency of the structure you choose.’

‘Both conservation areas and side spaces between properties are locations where councils want to closely control development, so a pergola would probably need approval first.’

‘Likewise, planning permission will be required if your property is a designated listed building. Any external changes to a listed building require consent to preserve the historical integrity. Since adding a pergola would count as an external change, listed building rules would apply.’

So, always make sure that you know exactly where you live and the rules surrounding it. This information can be found in the property deeds to your property or obtained from the Land Registry.

The best pergolas - our top picks

FAQs

How big can you build a pergola without planning permission?

If you’re building a pergola within two metres of your neighbour’s fence or boundary to your property, it can be no taller than two and a half metres high. However, if you’re building it over two metres away from a fence or boundary, it can be three metres high.

The rules are a little different if you choose to go for a pergola with a pitched roof, however. In that instance, it can be four metres high.

Those aren’t the only rules you need to follow, though. If your pergola is going to take up over 50% of your garden space, you’ll also need planning permission.

Can you put a pergola in your front garden in the UK?

You can only put a pergola in your front garden if you have planning permission from your local council. That’s because adding a pergola to the front of your house can affect the outward appearance of your home, which is often heavily scrutinised by your local council.

With this in mind, most people choose to install pergolas in the back garden, where the rules are a lot more flexible.

So, there you have it. While most people don’t need planning permission for a pergola, it’s always best to check just in case.

Adding a porch can have a big impact on your property. Not only can it add to your home's kerb appeal, but it can also help to offer useful additional space. Before you go ahead, however, you'll need to check whether you need planning permission for a porch or whether you can build one without it.

In many cases, building a porch will usually fall under Permitted Development, but you should always check with your local authority before you start building as in some instances, this may not be the case.

To help you understand the rules and regulations, we've checked in with the experts to explain when a porch does and doesn't require planning consent, and what other criteria it will need to meet.

Do you need planning permission for a porch?

In many cases, adding a porch to your home will fall within the scope of Permitted Development, which means you won't need to apply for planning permission.

However, this may not be the case for every home. If you live in a listed building or designated zone, like a conservation area, national park or Area of Outstanding Natural Beauty, your PD allocation might have been restricted or removed, which means you would need to submit a formal planning application to get consent to build a porch.

Similarly, if your home has already undergone significant extension works, then you may have used up your PD allocation, which means any additional space, even a porch, could be subject to planning permission.

It's important you check with your local planning authority before you start any building work to check what permissions you'll need.

How big can a porch be without planning permission?

There are certain criteria a porch must meet in order to count as a Permitted Development:

• The ground floor area (measured externally) is not more than three square metres
• The highest point of the porch is not more than three metres above ground level
• No part of the porch is within two metres of any boundary of your home and the road.

Does a porch need building regulations approval?

Due to their small size, porches are usually exempt from building regulations requirements, similar to the building regs rules for conservatories.

However this is only the case if certain conditions are met, as Rachael Munby of Anglian Home Improvements, explains: 'The existing front door between the house and porch must remain in place or be replaced with a new exterior door, and the porch must not adversely affect access if your home has ramped or level disabled access.'

If the porch contains any glazing or electrics, then those elements will need to apply with the relevant building reg guidelines. It is possible that the installer of these elements can self-certify that they meet the requirements under the Competent Person Scheme. This means they will notify Building Control on your behalf, so you won't have to.

FAQs

Do I need planning permission for a porch canopy?

While there are significant differences between a porch and a canopy, there are quite similar when it comes to planning rules. Usually you won't need planning permission for a porch canopy either. It can be argues that these are more architectural feature than additional space, but as long as they fall within the size and positioning requirements stipulated under Permitted Development, then you shouldn't need planning consent.

But as with many home improvements that can usually be done without planning permission, if you live in a listed building or specially designated area, you will likely have more stringent limitations on what you can and can't do without needing formal consent.

Once you've confirmed whether you need planning permission or not, you'll need to establish how much your porch will cost so you can budget accordingly.

Planning permission for garden fences might not be the most glamorous of topics, but recent weeks have seen plenty of people wondering exactly how high a fence can be – and for good reason.

It's all well and good having a long list of garden fence ideas to mull over, but there's no point obsessing over the best colours to paint your fence until you've researched the rules for fences in the UK.

One man from Telford recently learned this the hard way, making headlines when, after removing a garden hedge and trees to install a wooden fence, he was informed by the Local Planning Authority that he had committed an illegal act. 

Planning permission for garden fences

That's right: just as gardeners could be slapped with a £5,000 fine for making a garden waste mistake, so, too, could they find themselves in serious trouble for building a fence on their property. 

'Erecting a fence beyond the permitted height can lead to enforcement actions, including orders to alter or remove the fence,' explains Steven Bell, the CEO of Paving Shopper. 

So, how high can a fence be without planning permission? Do you need your neighbour's permission to put up a fence? And who even owns the fence on a boundary between two properties?

How high can a fence can be without planning permission?

Before you learn how to paint a fence, it's important to remember that, when it comes to seeking planning permission for garden fences in the UK, a good general rule of thumb is to keep things under 2 metres.

'The typical maximum height for a garden fence without planning permission is 2 metres, and 1 metre if it's adjacent to a highway or footpath – and that includes the trellis,' says Steven.

However, he cautions that 'checking with local authorities is crucial, as there can be subtle variations in regulations based on location'.

What is the best height for a fence?

The ideal height for a fence really depends on its purpose, which may impact your garden screening ideas. 

'For privacy and security, 2 metres is generally suitable,' says Steven. 'However, I've found that in more community-focused areas, shorter fences can foster a friendlier, more open neighbourhood feel.'

He goes on to explain that front garden fences are usually lower for a more welcoming appearance, while back garden fences can be higher for added privacy. 

'Personally, I like the balance of a lower front fence that complements the house's facade and a taller, more private boundary at the back,' says Steven.

Who owns the fence in your garden?

There is no real way to tell who owns a fence by looking (although it tends to be the case that the builders or property owners should have put the fence up facing away from their own property, so their neighbour gets the 'good' side).

'When it comes to who owns what fence, it can be quite confusing, and can often cause problems between neighbours,' says Craig Wilson, co-founder, director & in-house gardening expert at Gardeners Dream.

'To avoid this, refer back to the title deeds to your house. Here you will find a visual of your home's boundary lines, which will indicate which side you have ownership of, often marked with a T.'

If you don't own your home, you can also refer to the plans that are registered with the Land Registry (which may charge a small fee to access). 

What should people consider before building a fence?

Forget the fence colours to avoid: prior to erecting a fence at all, you need to consider its purpose, material, maintenance, local regulations, and neighbourly relations. It is also important to consider whether or not you will need planning permission first.

'When building a fence between your garden and your neighbours there are a few things that you should consider. Firstly, you want to think about how the height of your fence will impact how the sun reaches yours and your neighbours' gardens,' says Craig. 

'If the sun sits low in the sky, your fence might reduce the amount of sunlight that makes it into your space. Another thing to consider is the style of the fence in relation to other fences around your garden, as well as the style of your garden.'

Craig says that is also worth considering your neighbours here, too. 'Would the style of fence you chose look drastically out of place in their garden? If so, maybe consider something that works for you both,' he suggests.

'Lastly, I’d also advise you to think about how your chosen fence will stand up against high wind speeds,' he finishes. 

'Wind is the most common cause for fence damage, so you’ll want to think about the fence material, and how your posts are secured into the ground in relation to the likelihood of bad weather in your area.'

Should you replace your fence with a hedge?

Unlike fences, you don't normally need planning permission to plant a hedge in your garden, and there are no laws that say how high you can grow your hedge (although you will be responsible for its upkeep). 

'Hedges make for an attractive, affordable, and environmentally friendly alternative to traditional wooden fences,' says Tom Kitching, executive chairman at Henchman.

'Not only do they add more greenery to your garden, but they also help with noise reduction, provide protection from wind, and offer shelter and food sources for all kinds of wildlife like bees, butterflies, hedgehogs and birds. Plus, they generally require very little maintenance throughout the year and are much cheaper than a fence!'

It's a good idea to choose between one of the best hedging plants if you decide to go down this route, continues Tom.

'To avoid having to wait too long for your screen to reach the desired height, opt for something that is fast-growing,' he says. 

'Common Elder is a plant with beautiful-scented flowers that produces elderberries and Mock Orange offers dense, dark leaves with pretty white flowers during summer, both of which make for wonderful additions to the garden.'

'Eucalyptus is another popular fast-growing choice, and it has many additional uses around the home so that you can make use of any cuttings.'

'Evergreens will provide an attractive screen with year-round colour, and again there are plenty of plants to choose from,' adds Tom, noting that he would choose Photinia Red Robin, Escallonia, Mexican Orange Blossom, or the Portuguese Laurel for this purpose.

Alternatively, a thorny hedge like 'Pyracantha make an ideal choice for a multi-functional, secure barrier'.

Now that you know all the rules around planning permission for garden fences, you can get to work figuring out which garden screening idea best suits you and your backyard.

Just be sure to keep things under 2 metres – unless, of course, you're happy to apply to your Local Authority for permission, that is!

EDITOR’S NOTE: An earlier version of this article included a quote from a purported expert whose credentials we have not been able to verify. The quote has been removed. We regret this lapse in our verification process and have updated our internal protocols to reduce the risk of recurrence.

Making better use of your home's existing footprint is a cost-effective way to ease space pressures on your home without adding an extension. If you have an attached garage that is used as a dumping ground for stuff you rarely use, then converting it into usable living space could be a sensible move. But do you need planning permission for a garage conversion?

The world of planning permission can be complex as the rules may change depending on where you live and what changes have previously been made to your home. When it comes to converting your garage, in many cases you can do this without submitting a formal planning application, but you should always check before you start building to make sure you don't fall foul of the law.

Do I need planning permission for a garage conversion?

In general, converting an attached garage is one of those projects that you can do without planning permission. This is because the work often falls within the scope of Permitted Development.

However, this is not a blanket rule. If your home is situated in a designated zone, like a Conservation Area or National Park, then your Permitted Development rights may be restricted or removed altogether, which means you would need to apply for planning permission, which will add to your garage conversion costs.

You might also be required to apply for planning permission if your home has already been significantly extended since it was built, as your Permitted Development allocation may have been used up. Similarly, if your property is a new build, there may be limitations in place, so you should always check with your local planning authority.

'In most cases, if the work is internal, uses similar building materials to the existing home and does not enlarge the building, then planning permission is not normally needed,' advises Tabitha Cumming, a property expert from The Lease Extension Company.

However, you will need to check with the council that it meets strict height criteria to class as Permitted Development.

You may also find there are also stipulations under Permitted Development in terms of where you can put windows to ensure you don't negatively impact your neighbours privacy. In most cases you can, however, add a window to the front where a door was present before the works, without needing planning consent.

Make sure you adhere to the rules to the letter, otherwise you could give your neighbour cause to stop your garage conversion plans.

It is also important to check with your local authority whether there are any planning conditions in place on your property that may stipulate that garages can only be used for parking. If there are such conditions, you will need to apply to your local authority to have them removed.

Any additions at all to the outside of the garage will require planning permission, and if you think this applies to your project, you'll want to read these tips on securing planning permission first time round.

Are the rules different for detached garages?

If you have a standalone detached garage, then the rules may be slightly different, and you may be required to apply for planning permission to change the use.

This is because the space is separate to your home, and so changes would not count as internal works, and therefore not permissible under Permitted Development.

Does a garage conversion need building regulations approval?

Even if you don't need planning permission to convert your garage, it will need to meet the requirements of the building regulations on things like ventilation, fire safety, acoustics and thermal performance.

‘Even when planning permission isn’t required, it is still crucial that all applicable building regulations are followed, to ensure the structural integrity of the building is maintained, and there are appropriate provisions when it comes to ventilation, fire safety and insulation,’ says Rob Stone, Managing Director of GarageFlex.

Depending on the specifics of your project, you'll need to submit either a Building Notice or Full Plans application to your local authority's building control department. They will send an officer out at specified points throughout the project to inspect the work and ensure it is compliant and will issue a completion certificate when the work is done to confirm it meets the requirements.

FAQs

Do I need a lawful development certificate?

Even if you do not require planning permission to convert your garage, it may be wise to obtain a lawful development certificate.

While not a legal requirement, this piece of documentation essentially proves to your local authority and any future buyers – if and when you choose to sell – that your project was constructed legally. It also protects you if planning policies change between when you converted your garage and when you go to sell your home.

For those who would like that added bit of assurance, this could be a worthwhile option.

What happens if I convert my garage without the necessary permissions?

If it turns out that you should have applied for planning permission to convert your garage and you didn't, you could seek retrospective planning permission to gain consent after it has been built. However, this is a real risk. After all, there is no guarantee that consent will be granted and you could find yourself facing a hefty fine or having to undo the work completely.

Similarly, if you build without building regulations sign off, you could be prosecuted, face fines, have to fork out to change non-compliant work, or have to undo the work in its entirety. It could also jeopardise your chances if you want to sell your home in the future, as well as negatively impacting your home's value.

On top of all of that comes a whole load of stress that could be avoided by checking with your local authority and securing the necessary permissions before you start.

If your garage is also connected to your neighbour's home, you may need a party wall agreement in place.

Summer is prime time to revamp the garden, and what better way than adding a shed. However, before you start loading up on timber at B&Q it's important to ask 'Do I need planning permission for a shed.'

Shed ideas are no longer just for storage, you can turn them into a glamourous retreat filled with she-shed ideas, or look into shed gym ideas for an at-home workout space. In the Cuprinol Shed of the Year competition, we've even seen them transformed into pubs! 

While most sheds you won't need planning permission for, your garden shed ideas will have to adhere to strict guidelines so you don't fall foul of planning regulations. If you're looking to add one of these smart garden storage ideas to your garden, we spoke to the experts to find out everything you need to know about if and when you will need planning permission for a shed. 

There’s no doubt about it, the planning process can be daunting, as you will know if you have ever extended your home or undertaken building work. But the good news is that there are a number of building projects that can be carried out under Permitted Development (PD). What this means is that you don’t need to apply for planning permission to complete these projects.

However, not all sheds are covered by PD. We spoke to the experts to find out everything you could possibly need to know about adding a shed to your property.

Shed rules to follow

For a conclusive guide on what is and isn’t covered by PD, we always recommend having a look through the Government's Permitted Development Rights for Householders: Technical Guidance. It may be quite a lengthy read but it does explain every actuality and scenario in great detail. It’s also worth noting that PD does vary ever so slightly in Scotland, Wales and Northern Ireland.

But when it comes to sheds more generally, there are some universal rules that need to be followed when building a shed in your garden or any outdoor space on your property, particularly if you don’t want to have to apply for planning permission.

Size

In most cases you should be able to have a sizable shed in your garden without needing to worry about planning permission.

For those with particularly small outdoor spaces, it may be a little trickier to work out exactly where to place your garden shed – than it would be for someone with a substantially larger garden. But most of us won’t want to swallow up too much of our garden to put in a shed anyway.

The total floor area of the shed must be no larger than 15 metres squared. It should also not cover more than 50% of your garden either.

If you have grand plans to create a supersized shed, there is a maximum size before you do need to apply for planning permission.

‘Up to 30 square metres may still fall under 'permitted development', but other conditions may need to be met for this,’ details Tabitha Cumming, property expert from The Lease Extension Company.

Height

A garden shed should be no taller than one storey high. If it is any higher than this, that is when you will need to apply for planning permission.

According to Jack Sutcliffe, Co-founder of Power Sheds, ‘eave heights must not exceed 2.5m,’ while the, ‘overall height must not exceed four metres (for a dual pitched roof) or three metres (for any other roof).’

The only exception to this rule; if a shed is within two metres of a dwelling boundary, then the maximum height of the shed should be no more than 2.5 metres.

Placement

Most of us would probably consider placing a garden shed in our back gardens but even then there are stipulations that need to be followed.

According to UK regulations, Jack outlines ‘your shed must sit 2 metres from the boundary of your property, whether that’s a fence or a wall.’

This may seem like common sense but you cannot position the entrance of a shed towards a shed or wall. You probably wouldn’t think of doing this, as you would be unable to gain access to it but it is worth noting this as well.

This is essentially so that there is access all the way around the shed. So, if you were considering pushing your shed flush up against an external fence or wall, you will need to rethink that plan.

Other things to consider

If you are thinking about erecting your shed on a raised platform or adding a balcony or veranda to it, you will most likely need planning permission as you are essentially building on your property, even if it is just in an addition to your shed.

What can I use a shed for?

We’ve already mentioned the benefits of using a shed for additional storage. Many will solely use their shed to store garden tools, bicycles, plant pots or maybe even a lawn mower or strimmer. 

However, if you are looking to maximise the amount of living space that you have by turning a humble shed into an outdoor bathroom, a home office for your own business or even an additional bedroom, this is when you will need planning permission.

Essentially, you cannot live in or sleep in a garden shed without having the space be up to code as a habitable space. So, if this was your plan for your shed, it won’t be covered by PD and would be akin to building a new living space on your property.

Still unsure?

If you are at all unsure as to whether you need planning permission or not, it is best to contact your relevant local council for help.

For example, if you want to build something – even a garden shed – on land surrounding a listed building or in a conservation area, a planning application will most likely be required.

Also, if you do not own the land in which you are planning on adding a shed to, for example, if you are renting or the land is in joint ownership, you will need to get the landowner’s permission before you build or add anything outside.

If you're thinking about adding more space to your home with a conservatory, then it's important that you understand the rules and regulations you'll need to adhere to. But do you need planning permission for a conservatory or can you build one without it?

If you're planning a conservatory, the good news for many people is that you won't need planning permission. But this won't be the same for everyone and the rules can be complex and depend on where you live and what other changes have been made to your house in the past.

We spoke to conservatory experts to break down the circumstances when planning consent may be needed, when it won't be, and the other regulations you might need to meet.

Do you need planning permission for a conservatory?

In many cases, you won't need planning permission for a conservatory, as they often fall within the scope of Permitted Development.

Barney Bell from David Salisbury says: 'In the UK, most conservatories are considered permitted development, meaning they don’t require planning permission, provided they meet specific criteria.'

'Permitted development rights are an established grant that a house might already have in place,' adds James Upton, managing director of Westbury Garden Rooms. 'This allows some building works to be undertaken without having to make an application for formal planning permission, as you would with a loft conversion or a new porch.'

In order for a conservatory to fall under Permitted Development, in must fit a very specific set of criteria, which will be dictated by your local authority. If you want to build something beyond that criteria, then you will need to apply for planning permission.

But these rules are complicated, and they may not be the same for everyone. 'Different rules apply in conservation areas, national parks, for listed buildings, and Areas of Outstanding Natural Beauty (AONB’s),' says Barney.

'Conservatories for listed buildings most often require planning permission due to the nature of the property,' picks up Mervyn Montgomery, Joint-Founder and Managing Director of Hampton Conservatories.

'In many cases, the planning office will impose specific design constraints, such as ensuring the conservatory is sympathetic with the host property, maintaining the original style of the period home. However, some planning offices prefer the design to be in complete contrast so that the new extension is entirely obvious and not a ‘mock’ version of the original. This is where a bespoke design service really comes in handy.'

You should always check with your local authority before you start any building work to make sure you are clear on the rules that apply in your specific circumstances.

'Don’t let the potential requirement of planning permission put you off pursuing your dream conservatory, 'says Mervyn. 'Work with an experienced design team that can assist you throughout the process, advising on the necessary statutory requirements and supporting you throughout the application process to make your dreams a reality.'

Does a conservatory need to meet building regulations?

Even if you don't need planning permission for it, depending on it's size, conservatory building regulations may need to be met.

If your conservatory is built at ground level; is less than 30 square metres in floor area; has an independent heating system; and is separated from the house by external quality walls, doors or windows – it is normally exempt from building regulations requirements.

However, even if the conservatory itself is an exempt structure, any new structural opening between the conservatory and existing house will require building regulations approval. Part L is an important update to the regulations, covering all matters thermal.

How big can a conservatory be without planning permission?

'The maximum size a conservatory can be without planning permission depends on your property type and location,' says Barney Bell. 'For a detached house, the conservatory must not extend more than 4 metres from the rear wall; for a semi-detached or terraced home, the limit is 3 metres.'

'Larger sized extensions can be built under ‘prior notification,’ which is a form of Permitted Development whereby the local planning authority must be notified of the details prior to development taking place.'

Barney goes on to say: 'For householders, single storey, rear residential extensions can be built up to 8m in depth (6m for a semi or terrace) provided that boundary neighbours are first informed. If no objections are received (or any objections received are not considered to have planning merit) and the LPA is satisfied that there are no significant adverse impacts arising from flooding, highways or contamination, a Lawful Development Certificate is issued.

'Additionally, the conservatory must not cover more than 50% of the original garden space, exceed 4 metres in height, or be higher than the house’s eaves.'

Most reputable conservatory companies will offer planning advice to assist you through the process.

If you plan on building your conservatory right up to the boundary with a neighbouring property, you might need to get a party wall agreement in place before any work begins. Ignoring the Party Wall Act could prove costly, so it's important to follow the rules.

Can I convert my conservatory into an extension without planning permission?

According to the experts, converting a conservatory into a fully functioning extension may involve changes beyond permitted development regulations. And because of this, it is wise to check with the planning department at your local authority to be completely sure before you start the process of converting your conservatory into an extension.

David Salisbury's Barney Bell explains: 'Generally, turning a conservatory into a full extension may require planning permission, but this will depend on the scope and scale of the changes.

'If the original conservatory was built under Permitted Development rights, altering it into a solid-roofed extension could exceed these allowances, making an application necessary.

'Key factors include the size of the structure, its distance from boundaries, and whether the property is listed or in a conservation area.

'Replacing a glazed roof with a solid one or modifying walls significantly may change the classification from a conservatory to an extension, triggering the requirement for a full planning application.'

FAQs

Do I need planning permission to put a solid roof on my conservatory?

Older additions can become swelteringly hot during the summer and icy cold in the winter, so it might be worth thinking about modernising your conservatory. And as part of that, you might think about replacing your existing conservatory roof with a solid one. But can you do this without going through your local planning authority.

Barney explains: 'In many cases, making alterations to an existing conservatory, which includes changing its roof, can be done without planning permission, provided the structure remains within permitted development rights. If the conservatory was originally built under these rights and the changes do not exceed size restrictions or alter the building's footprint significantly, approval may not be required.

'However, if your property is listed or in a designated area (such as a National Park or Conservation Area), you may need planning permission for even minor changes. Replacing a glazed roof with a solid or tiled alternative could also impact building regulations, particularly regarding insulation and structural integrity.'

But if you submitted a planning application to build your conservatory in the first place, it's possible you could need to apply again. ‘If you gained planning permission for the existing conservatory and now seek for it to have a solid roof, providing it is of the same height, it is unlikely to require planning permission,’ according to Melanie Clear, founder of Clear Architects. ‘If, however, the new roof is higher, even by the smallest of measurements, this will require planning permission.’

But, ‘given the thermal improvements this will make to the overall home, most councils will be accepting of this change to help reduce energy use for the property,’ Melanie asserts.

It is always recommend to check with your local planning authority before making modifications to an existing conservatory.

Do I need a door between a house and conservatory?

One thing you may not have considered in terms of how to plan a conservatory is whether you need a door separating it from the original house or not.

'If you are opting for a traditional conservatory, you will often have to have a door between your house and conservatory due to heat loss,' says James from Westbury. 'This is something that can be required under building regulations. However, if you opt for a timber frame orangery this is not always a requirement due to the superior insulation.'

Can I put a conservatory on the front of my house?

'If planning permission and space allows, there is no reason why you should not be able to put a conservatory on the front of your house,' adds James from Westbury. 'This is not something that we see very often.'

'Most people attach their conservatory or orangery to the living space that is often at the back of the house such as the lounge, dining, or kitchen area. When positioning a conservatory on a property our aim is always to make the most of the surrounding views, be this at the front or back of the property.'

Once you've decided on the build, incorporate some of these conservatory interior ideas to make the most of your new space.

EDITOR’S NOTE: An earlier version of this article included a quote from a purported expert whose credentials we have not been able to verify. The quote has been removed. We regret this lapse in our verification process and have updated our internal protocols to reduce the risk of recurrence.

If you don't want to, or can't afford to, move house, then improving your existing home is the way to go if you want to make it suitable for your way of life. But these alterations may be substantial and homeowners might be put off by the idea of having to navigate the planning system in order to make the changes. Fortunately, there are plenty of home improvements you can do without planning permission.

This is thanks to Permitted Development (PD), which gives implied consent for certain changes to be made to a home without having to apply for planning permission. However, planning and PD rules are complex and depend on various factors including where you live and any alterations that may have already been made to your home.

While the projects on this list generally fall within the scope of PD, there will be exceptions. You should always check with your local planning authority before you start work to check the rules for your specific circumstances.

1. Reconfigure the internal layout without planning permission

Knocking down or moving interior walls can make a huge difference to your home, improving its flow, granting extra space where you need it and allowing natural light to enter the property more effectively.

In many cases, you can reconfigure the existing floor plan without needing to get permission from the planners, provided you are not extending the overall footprint of the property.

However you will need to follow building regulations guidance for key elements of the work – i.e. any structural changes, where supporting walls are needed.

Seek help from a structural engineer to help with this process.

2. Replace windows and doors

When it comes to whether you need planning permission for windows (and doors) will depend on where you live and what kind of changes you are looking to make. Replacement windows and patio doors can be totally transformative for any property, both aesthetically and practically. They can not only make your home look more attractive, but can also help improve its energy efficiency.

The Planning Portal states that the following do not usually need planning permission:

• 'Repairs, maintenance, and minor improvements, such as repainting window and door frames
• 'Insertion of new windows and doors that are of a similar appearance to those used in the construction of the house (note – a new bay window will be treated as an extension and may require permission)
• 'Installation of internal secondary glazing'.

Adding a new external doorway or replacing a door with a window (or vice versa) may also be permissible under PD, but this will depend on where the door or window will be located on your property, and where in the country you live.

3. Replacing your roof

In many cases, you won't need planning permission to replace the roof on your home, provided it doesn't alter the existing roof height and that nothing projects more than 150mm from the roof slope.

Even though this can be usually be done under Permitted Development rules, it's worth checking whether your local authority has any stipulations about materials you can use.

4. You can add roof windows without planning permission

Bringing in light from above can be key to making a home feel brighter and more spacious. You won't usually need planning permission for a VELUX window, providing they follow these strict rules:

• The windows do not protrude more than 150mm beyond the plane of the roof slope
• They are no higher than the highest part of the roof
• If placed in a side elevation roof slope they must be obscure-glazed and either non opening or more than 1.7 metres above the floor level

But there are different types of roof windows available, and the rules may depend on which type you choose. A roof lantern may project further from the roof than a rooflight, and so may be subject to planning approval.

As with everything on this list, you should always consult with an expert before going ahead to make sure you don't fall foul of the rules.

5. You don't need planning permission to build a porch

You don’t need planning permission when you opt for a small porch idea if the floor doesn’t exceed three square metres, and it's no more than three metres above ground level. You will also need to make sure that no part of the porch is within two metres of any boundary of the house or a highway.

However, you will need to be careful if you take the front door of the property out the porch. It then becomes part of the property and potentially subject to planning permission.

6. Installing or updating cladding can be done under Permitted Development

Adding cladding or render to the exterior or your home can usually be done under PD, but you should check to see if there are any local restrictions or criteria in terms of materials and appearance you need to know about.

But this kind of work is not usually allowed without planning permission in Conservation Areas (and similar) or on listed buildings.

7. Convert your loft into a room without planning permission

If you're planning a loft conversion then there is good news. You don't usually need planning permission for a loft conversion providing it is no higher than the highest part of the roof and a similar material to the rest to the house is used.

Any loft conversion idea that goes beyond your existing ceiling space does require permission, so check before you start work.

If you live in a terraced house, the loft conversion can't exceed the original roof space by more than 40 cubic metres. This increases to 50 cubic metres for detached and semi-detached houses. However, the roof enlargement can’t hang over the outer wall of the house.

8. Undertake a garage conversion

If you are thinking about converting an attached garage into usable living space then you can usually do this under Permitted Development, in the same way an internal remodel would.

But you do need to check whether there are any planning conditions attached to your property that stipulate that the garage can only be used for car parking.

The rules around planning permission for a garage conversion can also differ if the garage is standalone rather than being attached to your property. In this case, you may need to apply for planning permission to change the use.

9. Convert a basement without planning permission

You should be able to convert your basement without planning permission, as long as you are not planning to:

• Make any changes to the exterior structure
• Use it as additional accommodation
• Excavate.

10. Build a single-storey extension without planning permission

Permitted development does allow for a single storey extension to be built without applying for planning permission, which is music to the ears of many homeowners. But there are strict criteria that the addition will need to meet:

• The extension must be built on the side or rear of the home
• It cannot extend past the rear wall by more than three metres for an attached property or four metres for a detached home. Although if you secure prior approval under the neighbour consultation scheme from the local planning authority, you build a rear extension by up to eight metres (for detached houses) and by six metres (if not detached)
• Building materials must be similar to the existing property
• It takes up less than 50% of the land surrounding the property
• Must be less than four metres in height or three metres if it is within two metres of a boundary
• Any eaves or ridges must be no taller than the original property

You can build a side extension without planning permission, but only if it is…

• Single storey and less than 4m in height
• No more than half the width of the original house at its widest point.

If the side extension is being attached to an existing extension, the measurements above apply to both constructions as one enlargement. If you want your side extension to extend out beyond the rear wall (but not be attached to it), it is subject to the same rules as rear extensions in terms of how far it sticks out.

11. Building a conservatory doesn't need planning permission

You don’t usually need planning permission for a conservatory either, as long as you adhere to the strict height and width regulations (these will be the same as for a single storey extension).

Your conservatory might also be exempt from building regulations requirements if it is has a floor area of less than 30 square metres, is independently heated and is separated from the main house by external doors.

12. Install a garden room

If you are looking to bring your garden room design ideas to life, then you can usually do this without needing planning permission, providing it meets certain criteria in terms of size and use.

If the garden building is away from the house, takes up less than 50 per cent of the garden and is smaller than 15 square metres, or in some cases 30 sq m, you’re unlikely to need planning permission or building regulations approval. If you want to use the garden room as an extra bedroom or an annexe, then you should check with your local authority around what is required.

'The use of any garden building is restricted to purposes ‘incidental to the enjoyment of a dwelling house’ – essentially household only use' Jo at Modulr Space, explains. 'Permitted Development rights can also be removed by local orders or by other planning restrictions which may have been imposed on previous planning permissions.'

13. Construct a two-storey rear extension under Permitted Development

If you need significant additional space, then often you can build a two-storey rear extension without planning permission. But again, it has to adhere strictly to the following guidelines:

• The extension can be no more than three metres beyond the rear wall
• Must be within seven metres from the boundary of your plot that’s directly opposite that wall (10m in Scotland and 10.5m in Wales).
• The build has to be less than four metres high
• Any windows on the side elevation should use obscured glass, and be non-opening, unless the opening is more than 1.7 metres above the floor of the room it's in.

If you wish to add a second storey to an existing single-storey extension, this won’t be possible under Permitted Development if the existing addition extends beyond the rear wall by more than three metres.

14. Installing solar panels

If you want to make your home more sustainable and lower your energy bills, you don't usually need planning permission for solar panels.

However, if you live in a designated zone, like a Conservation Area or National Park, or if your home is a listed building, you may need to apply for permission to add solar panels to your home.

15. Adding a heat pump doesn't need planning permission

The installation of a single ground-source or air-source heat pump usually falls within the scope of Permitted Development, so you won't need to apply for planning permission. The unit must comply with the Microgeneration Certification Scheme Planning Standards MCS020 and in the case of an air-source heat pump, should be located at least one metre from the boundary of your home.

If you live in a designated zone or a listed building you may find you need to apply for planning permission, or that you face additional criteria in terms of where the heat pump can be installed.

If you want to install an additional heat pump, you will need to apply for planning consent.

16. Adding an EV charge point

You can install a charging point for your electric car without needing planning permission, provided its in a place that is lawfully used for off-road parking, and the property isn't listed or in a designated zone.

The specific criteria you'll need to meet may change depending on whether you opt for a wall-mounted charger or one on an upstand.

You might also find there are stipulations around removing the charging unit when it is no longer required.

17. Erecting fences and walls around boundaries

You can build, maintain or alter any fence, gate or wall surrounding your property provided they are within the boundary lines and they doesn’t exceed one metre in height when adjacent to the highway, or two metres for other fences or gates.

Anything beyond that, along with listed buildings, will need planning permission.

18. Building a shed

If you are planning on installing a shed to be used as storage, then you can usually do this without needing planning permission, as long as:

• The floor area is less than 15 square metres
• It's not located in front of your house
• It's single storey, with a height of less than 2.5 metres
• Has no veranda or balcony attached to it
• Is not going to be used for commercial activities or as additional accommodation.

19. Installing raised decking

You shouldn't need to apply for planning permission to add a raised deck to your garden.

That is, provided the deck is no more than 30cm above the ground and covers no more than 50 per cent of the garden area.

20. Upgrade your driveway

Depending on where you live, you can usually upgrade your driveway under PD. But the rules may stipulate you use certain porous materials to help with drainage, or make provisions for rainwater to drain away natural via a lawn or flower bed.

If you want to add a new driveway, the rules will depend on the road you are looking to build a driveway off. If it's a non-classified road, you may be able to do this under PD, but you will likely need planning permission if the road is classified.

FAQs

How do I know if I need planning permission?

The best way to know if you need planning permission or whether your proposed alterations are classed as Permitted Development is to check with your local planning authority. If you are working with an architect, or a reputable installer for things like conservatories, then they may be able to do this on your behalf.

Do all homes have Permitted Development rights?

While many homes will have an certain allocation of Permitted Development rights, in some areas these may have been restricted or removed altogether. This tends to be the case in areas like:

• Conservation Areas
• National Parks
• An Area of Outstanding Natural Beauty
• A World Heritage Site
• Norfolk or Suffolk Broads.

In these areas, it doesn't mean that home improvements aren't allowed, it just means that you will need to submit a planning application.

Homes that have had significant additions or alterations in the past, even those done by previous owners, may find that their PD allocation has been used up, which means any more changes will need planning permission too.

Even if you don't need planning permission, you may still need building regulations approval and possibly a Party Wall Agreement with your neighbours.

It's useful to obtain a Certificate of Lawful Development from your local authority for any works you're carrying out, confirming the project falls within permitted development rights.

What happens if I thought it was Permitted Development, but it turns out I needed planning permission?

While you should always check the planning situation before you begin any building work, mistakes do happen. If it turns out you should have sought planning permission but you didn't, you can apply for it after the fact. This is known as retrospective planning permission.

But there is no guarantee that this will be granted, and you may find yourself subject to enforcement action to make changes to, or even undo, the building work at your own expense.

Whatever building work you might have planned, if it impacts a wall or boundary you share with a neighbour, it's worth knowing whether it's illegal to ignore the Party Wall Act so you can stay on the right side of the law.

There's a lot to consider when you want to add more space to your home, but make sure you research whether you will need planning permission for your extension to avoid falling foul of your local authority's planning rules.

Building an extension is a great solution to make your existing home work better for your family and ease space pressures that can make your property feel oppressive. But if you want to add more space to your home, there are various rules and regulations you'll need to abide by, and this includes planning permission.

Whether you'll need to apply for planning permission for an extension or not will ultimately come down to the size and type of extension you want to build, where you live, and whether your property has previously been extended. Here we explain everything you need to know so you stay on the right side of the law.

Do you need planning permission for an extension?

Technically, all extensions will require planning permission in some shape or form, but in many cases this permission is granted automatically under what is known as Permitted Development (PD rights), which means you do not have to submit a planning application.

Whether or not you need to apply for planning permission when extending your home is complex and will depend on a few different factors rather than being a straightforward yes or no. But it's important that you find out whether your project needs it before you start, otherwise you could potentially find yourself having to undo all the work you have done.

Robert Quinton, director of Construction Megastore, adds: 'Not all home extensions require planning permission, thanks to permitted development rights. Certain changes, like rear or side extensions, loft conversions, and garage conversions, are allowed, as long as specific criteria are met.'

While for many homeowners, not having to go down the planning application route for an extension can be a huge positive, extension rules under PD are strict and must be adhered to (more on that below).

However, there are limitations to PD. If you live in a maisonette or a flat, then PD rights do not apply given the impact that any building work could have on your neighbours. Similarly, if you live in a listing building or a designated area; such as a Area of Outstanding Natural Beauty or a Conservation Area; your PD rights may be severely limited or removed altogether, under what is known as a Article 4 Direction. If this is the case, it doesn't mean you cannot extend your home at all, it just means you'll have to submit a planning application.

There is also a limit on how many changes you can make under PD. PD rights are based on the property as it stood on 1 July 1948 (or as it was originally built, if it was built after July 1948). This means that any previous additions made under PD by previous owners count towards your allocation — it doesn't start fresh when you move to a new house. Zara Banday, Partner and Head of Residential Property at Slater Heelis Solicitorsadds: 'The local planning office will hold records of past planning permissions relating to the property, and copies are usually displayed on the council’s website. If a house has been extended previously it may be visibly obvious, and you can also make enquiries of any previous owner to see if any work has previously been carried out under Permitted Development Rights.'

Do all extensions fall under Permitted Development?

While some extensions will fall under the scope of Permitted Development, not all do. There is a definitive guide to Permitted Development rights contained in the Government's Permitted Development Rights for Householders: Technical Guidance. The detail does vary slightly in Scotland, Wales and Northern Ireland.

The guides are comprehensive, but a bit technical and can be daunting, especially if you've not come across this information before. The good news is, your architect should be well-versed in planning rules in your local area, and can make sure their design falls within the scope of PD.

If you do need to go down the official planning route, they can apply on your behalf. You can also speak to your local planning authority or a planning consultant who will be well-equipped to offer advice on whether your proposed extension project requires a planning application or not. If your application is approved, there will be planning conditions attached to it, which will need to be followed otherwise the consent will be voided.

What size extension can I build without planning permission?

The size of extension you can build without planning permission will depend on how big your plot is and what’s already on it. You can build an extension under Permitted Development as long as it doesn’t exceed 50% of the area of land your house sits on. That 50% excludes the area covered by the house itself, but also includes any sheds and outbuildings.

But there are specific criteria that will apply depending on whether you want to build a single or double storey addition, and whether you want to build it to the rear of the property or the side.

Some of these rules may not apply if you live in a designated zone, like a Conservation Area or National Park.

FAQs

Can I extend the front of my house under PD rights?

If the front of your house faces a road, then no, you will not be able to extend under Permitted Development rules. You’d have to apply for planning permission instead. In cases where your house sits on a corner plot where the side wall faces the road, this cannot be extended under permitted development either.

If you’re desperate for any extra space at the front you can possibly gain, you could add a porch to an external door (max 3sq m) as long as it’s no higher than 3m and further than 2m away from the boundary with the road.

Balconies, verandas, a chimney, aerial or satellite dish would not be allowed under Permitted Development.

What is a Lawful Development Certificate and do I need one?

If you choose to build an extension under PD rights, it's worth getting a Lawful Development Certificate from the local council before you start the build. This legally binding document confirms that you do not need planning permission for an extension. It's a good piece of paperwork to have, especially if you come to sell your home in the future.

Will I need Building Regulations approval?

Even if your project can be built under PD rules, the project will need to comply with Building Regulations for an extension. The Building Regs are there to ensure construction work is safe and meets standards. From the foundations right up to the roof, there are strict regulations that need to be met.

A building control officer, hired either through the local council or as an independent inspector, will be needed to sign off the build against the regulations at different stages of construction.

You will need to have Building Regs drawings, which can be drawn up by an architect. Expect to pay around £700 for drawings of a single-storey extension. You will also need to factor in fees for building control application fees, any structural calculations by a structural engineer and any Party Wall Agreement fees.

Can my neighbour stop or object to my extension being built under Permitted Development Rights?

Your neighbour can't legally stop you from extending your home as long as you have the necessary permissions or meet the PD criteria, but it’s in your interests to maintain a good relationship with them. Keep them up to date with your plans and take their views into account when planning your new extension.

If you’re going down the neighbour consultation scheme route for prior approval of a larger extension under Permitted Development, your neighbours do have the opportunity to present valid objections.

How much does planning permission cost?

If your project cannot adhere to the PD rules outlined above for PD rights then you'll need to submit a planning application. And in England, this will cost £258.

Most planning applications take up to eight weeks, unless they are unusually large or complex, in which case the time limit is extended to 13 weeks. If permission is refused, you can appeal but this process can take several months, so you’re better off tweaking your plans to reach an agreement.

If your project – or your property – is anything out of the ordinary, it’s worth hiring a planning consultant to navigate the permission minefield for you and expedite reaching an agreement to keep your project on track. Just make sure the consultant you engage is a chartered member of the Royal Town Planning Institute.

What happens if you don't get planning permission for an extension?

If you're project doesn't qualify as as Permitted Development, then you'll need to apply for planning permission. But some people don't, and go ahead with the build anyway, but this can have dire consequences for your project.

Rob adds: 'Building without planning permission is not a criminal offence, but it can lead to serious consequences. Councils have the authority to issue Enforcement Notices, which may legally require you to alter or even demolish unauthorised work. This can be both stressful and expensive.'

Zara adds: 'You can appeal against enforcement but if this is unsuccessful and you fail to comply with the notice, you can be prosecuted.

'From April 2024 the time limit for taking enforcement action is 10 years.'

You may be able to apply for retrospective planning permission, which is essentially applying for permission after the extension has been built, but there is no guarantee that this will be granted, and you could have to tear down your extension.

For peace of mind, and to protect your project and budget, it's best to check with your local planning authority and your architect to check what permissions may be required before you start.

If you've got some significant home improvements on your wish list, then you may find yourself having to navigate the world of planning permission for the first time.

While there is lots you can do to your home without planning permission under what is known as Permitted Development, depending on the scale of your proposed changes and where you live, you might need to get approval from your local planning authority before you begin work.

This can be really daunting so we've broken down what you need to know, and explained some of the jargon you might come across to help you feel more confident with the process.

What is planning permission?

In the simplest terms, planning permission is consent from your local planning authority to build, or make significant changes to a building. It applies to both residential and non-residential buildings.

While there is a national planning policy framework, local authorities can have their own policies on top of that too, so it can be a complex world to wrap your head around.

All permission comes with planning conditions attached, and these must be followed or your consent will be voided.

Rules and processes differ between England, Scotland, Wales and Northern Ireland. Whether you need planning permission or not, you will need to adhere to the Building Regulations. There are also additional requirements for listed buildings. So always check with your local authority about what permissions and consents are needed for your specific circumstances.

How is planning permission different from Permitted Development?

While planning permission requires you to submit a formal application to your local planning department and await consent to make whatever proposed changes you have planned, Permitted Development is an implied consent that allows you to make certain changes without submitting a formal application. This could be anything from adding a porch, converting a loft and even adding a two-storey extension.

However, in order for an improvement to fall within the scope of Permitted Development, it will need to meet specific criteria. These criteria cover multiple factors including size, position (for example, an extension at the rear of your house) and where in the country you live. There are also limits to the changes you can make under Permitted Development. Once your allocation is used up, you will need to apply for planning permission to make further changes. And this allocation is based on how your property as it was on 1 July 1948 (or as it was originally built, if it was built after July 1948). So any changes made by previous owners count towards it — it doesn't start fresh when you buy a new house.

If you live in a designated zone, like a Conservation Area or National Park, you could find that your Permitted Development rights have been restricted or removed altogether. This doesn't mean that you won't be able to make any changes to your home, it just means that you will need to apply for planning permission.

Prior Approval and Lawful Development Certificates

In some cases, projects that are classed as Permitted Development will require Prior Approval be sought from the planning department before work begins. This is why you should always check with your local planning authority about what is required before you start.

Planning consultant Simon Rix says: 'Extensions, that are under a certain size, on many (but not all) houses count as permitted development, so no planning application would be needed,' explains planning consultant Simon. 'If this is the case neighbours won’t even be asked for their opinion by the council.'

'However, some, larger, permitted development extensions do require a kind of mini-planning application to the council, called 'prior approval'. This will consider impacts on neighbours. But, as with extensions that do require normal planning applications, what counts is the council planning officer’s views on what those impacts on neighbours would be, not what the neighbours actually think of them.

'A warning here: never just assume your extension is covered by permitted development. There are many exemptions and even the size restrictions can be interpreted in different ways. So if you are spending good money on a lovely new extension to your beloved home, use a planning consultant and always get a Certificate of Lawful Development before you start building.

'This Certificate is a legally binding confirmation from the council that what you want to do really doesn’t need a planning application. Failure to do this could at the very least cause you problems with solicitors when you come to sell the house.'

Why do I need planning permission?

While the planning permission process may seem arduous, it is necessary to control how your local area develops. It ensures that any new buildings, or significant changes to existing ones, meet local planning policy. These policies take into account how buildings are used, their appearance, and how they work with the local landscape, infrastructure and general environment.

When do I need planning permission?

The question of when you need planning permission can be a minefield. And the answer is it depends on where you live and what you are proposing.

In general, there are loads of improvements you can make without planning permission, and anything more significant than these is likely to require you to go through the formal planning application process.

It's always best to check with your local planning department about whether you need planning permission or whether your ideas fall within the scope of Permitted Development.

If you are confident that your project will need planning permission, your architect or designer should have knowledge or local planning policy, or you can hire a planning consultant to offer guidance.

Does my neighbour have to agree for planning permission to be granted?

If you are planning a large extension that does require planning permission, you might be worried that your chances of approval will be scuppered if your neighbour has objections. But that may not be the case. 'The simple answer is no, not at the moment, but it’s of course better to get their support if you can,' explains planning consultant Simon Rix. 'That’s because they will, in many cases, be asked for their opinion. That all said, the system is changing, so it’s worth getting professional help from an early stage.

'Planning decisions are made on the basis of planning policies. Occasionally comments from neighbours are relevant to those planning policies, but this is rare. They are more often incoherent and fuelled by anger or jealousy. If so, they will be given little or no weight by the council's planning department, who usually decides on such matters. That's not to say such comments can be completely ignored by you though.

'Even irrelevant or factually incorrect neighbour objections can sometimes have an impact on the deliberations of elected councillors. That's because part-time councillors are rarely experts in planning policies. So, if you do receive an objection to your planning application from a neighbour, no matter how off-beam it appears, you should rebut it by calmly pointing out the true facts and highlighting why your application does comply with the relevant planning policies.

'That said, it’s always best to get the support of your neighbours if you can. Even if they can’t convince the professional planning officer of their objections, they may be able to get the support of the elected councillors to oppose your plans, and they really could put a spanner in the works.'

How do I apply for planning permission?

Before you start, it's worthwhile taking advantage of any pre-application advice that your local planning authority might provide. This will allow you to explain your proposed project to a planning officer and get their take on any potential sticking points or issues that you could iron out before submitting your application.

Getting pre-application advice doesn't automatically guarantee consent, but it can be a useful tool to help you get planning permission first time round.

You also have the option to submit either a Full Plans application or an Outline application (which is less detailed than a Full Plans version, and is essentially asking for permission in principle on a proposed idea). Outline planning permission can be useful if you are looking to sell your house, and want to make it more attractive to buyers who might want to make the changes themselves.

The Planning Portal has a great flow chart that explains the planning application process. But in a nutshell:

• Submit either a Full Plans or Outline planning application, with the required fee and supporting documents. This can be done online through the Planning Portal or via your local authority's website.
• Your LPA will consult on the application (which involves publicising it via notices or even local newspaper adverts) and aim to reach a decision within target timeframes
• The outcome of the consultation will either mean that permission is granted, permission is granted with conditions attached or the application is refused
• If permission is granted, your work must start within the agreed timeframe, and if planning conditions are attached these must be met or discharged within the stated timeframe
• If permission is refused you can tweak your application and reapply.

In terms of time frame, many applications will be processed within eight weeks, while more complex projects might take 13. If the application requires an Environmental Impact Assessment, you can expect it to take 16 weeks for a decision to be made.

But if your LPA is under resourced, it may take longer. 'A planning application should take between eight to 12 weeks, depending on the local authority and if the site is in a national park,' says architect Darren Bray from Studio BAD. 'But almost all planning departments are suffering from a lack of resource, so our experience is every planning application now runs over. You will generally be asked to agree to an extension of time.

'Typically, at the moment, I would allow a minimum of three months and in many cases six months. This is another good reason to employ an architect - so that they can chase the local authority for you. They may already have a relationship with the planning department, too, which is helpful.'

How much does planning permission cost?

The fee for your application will depend on your proposed project. If you live in England and want to build a large extension (that can't be built under Permitted Development), you will pay a fee of £258.

As of 1 April 2025, fees will increase annually by the rate of inflation from the preceding September.

How long does planning permission last?

Usually, planning consent is valid for three years from the day it was granted, but this does depend on the type of application that was submitted.

If you only applied for outline planning permission, then you have three years to submit further details (or reserved matters) for approval. From when those reserved matters are approved, you have another two years to start building.

Any timeframes should be stated in your approval documents so make sure you read them carefully.

What are planning conditions?

You might find that your application is approved, but with conditions attached. This means that the approval is based on additional requirements being met.

Some of these conditions will need to be met before work can begin, while others will apply while the work is being undertaken or even how the project can be used in the future. Depending on the project, there may also be conditions around when the work can begin and when it can take place.

FAQs

What can I do if my planning application is rejected?

In the event your planning application is rejected, you do have options. You can appeal the decision, which can be costly and time consuming, or you can amend your application, taking into account the reasons it was rejected and resubmit.

It can help to have some flexibility so you can reach a design that works for you and your home, and satisfies the planning department at the same time.

What happens if I fail to get planning permission?

If you don't manage to get planning permission, then it's worth going back to the drawing board and working with your designer or architect to work on a proposal that either doesn't require planning permission (because it falls under Permitted Development) or that is a better fit with local planning policy.

But it's best to avoid this situation by working with an architect and planning consultant who are extremely familiar with the planning rules in your area, and taking advantage of pre-application advice from the planning office.

Can I apply for planning permission after I've done the work?

While it is possible to apply for planning permission after the work is complete via a retrospective planning application, this is a huge gamble.

Robert Quinton, home improvement expert and owner of Construction Megastore says: ‘Retrospective planning permission is when a property owner seeks approval from the local authority for work that has already been completed without prior permission. This often happens when homeowners realise they've made a mistake, or if they are asked by the local authority to apply for permission after changes have been noticed.

‘The process can be complex, as it requires submitting detailed plans and justifications for the unauthorised work. Typically, planning permission applications can take around eight weeks to process, though more complicated cases may take up to 13 weeks.'

While retrospective planning permission is an avenue to consider, there is no guarantee it will be granted. Robert adds: 'Homeowners should be aware that if retrospective permission is denied, they may be required to reverse the changes, and could potentially face further legal consequences.’

It's always best to make sure you have the necessary permissions in place before you begin to avoid any doubt and risk.

Depending on your proposed scheme, you may also need to have a Party Wall Agreement in place.