Solar Panels Planning Permission in the UK
Good news for UK homeowners: most domestic solar panel installations do not require planning permission. In England, solar panels are classed as permitted development, meaning you can install them without applying for planning permission. However, there are specific conditions you must meet, and certain properties (such as listed buildings and homes in conservation areas) are not covered by permitted development rights.
Based on the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended).
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Quick Answer
Most residential solar panel installations in the UK do not need planning permission. In England, solar panels are permitted development provided panels do not protrude more than 200mm beyond the roof plane, do not extend above the highest part of the roof (excluding the chimney), and for ground-mounted systems the total area does not exceed 9 square metres. Listed buildings, conservation areas, and AONBs have additional restrictions. Rules differ in Scotland, Wales, and Northern Ireland.
Do you need planning permission for solar panels in the UK?
For the vast majority of UK homes, the answer is no. Solar panels on houses are classified as "permitted development" under UK planning law, meaning you can install them without applying for planning permission.
Permitted development rights for solar panels in England are set out in the Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 14. These rights allow homeowners to install solar panels on their roofs and within their grounds without needing to submit a planning application, provided certain conditions are met.
There are conditions attached to permitted development, and certain properties are excluded. If your home is a listed building, is located in a conservation area, an Area of Outstanding Natural Beauty (AONB), or your installation exceeds specific size limits, you may still need to apply for planning permission.
Key point
Your MCS-certified installer will know whether your property qualifies for permitted development. If you are unsure, ask your installer or contact your local planning authority before starting work.
Permitted development conditions for residential solar panels
Under the General Permitted Development Order (GPDO) 2015, Part 14, solar panels on houses are permitted development provided the following conditions are met.
Roof-mounted panels
| Condition | Requirement |
|---|---|
| Projection above roof | Panels must not protrude more than 200mm beyond the roof plane |
| Highest part of roof | Panels must not extend above the highest part of the roof (excluding the chimney) |
| Total panel area | No specific area limit for domestic roof-mounted panels on houses, but panels should be sited to minimise visual impact |
| Flat roof installations | On a flat roof, panels must not be visible from a highway and must not be within 1 metre of the external edge of the roof |
| Wall-mounted panels | Wall-mounted solar panels are permitted development but must not protrude more than 200mm from the wall surface |
Ground-mounted (standalone) panels
| Condition | Requirement |
|---|---|
| Total area | Must not exceed 9 m² |
| Height | Must not exceed 4 metres above ground level |
| Setback from boundaries | Must be at least 5 metres from any boundary of the property |
| Location | Must not be placed within the curtilage of a listed building, or within a site designated as a scheduled monument |
Scotland, Wales, and Northern Ireland
The permitted development rules above apply to England. Scotland, Wales, and Northern Ireland each have their own planning regulations for solar panels, which are broadly similar but differ in detail. Check with your local planning authority or visit planningportal.co.uk for guidance specific to your nation.
When do you need planning permission for solar panels?
While most homes qualify for permitted development, there are situations where you will need to apply for planning permission before installing solar panels.
Listed buildings
If your property is a listed building, permitted development rights do not apply. You must apply for both planning permission and listed building consent from your local authority before installing solar panels.
Conservation areas and AONBs
Properties within a conservation area, Area of Outstanding Natural Beauty (AONB), National Park, the Broads, or World Heritage Site face additional restrictions. Panels on a wall or roof slope forming the principal or side elevation and visible from a highway may require planning permission. Check with your local authority.
Exceeding size limits
Ground-mounted systems exceeding 9 m² in total area, or exceeding 4 metres in height, require a planning application. Panels that protrude more than 200mm beyond the roof plane also fall outside permitted development.
Flats and maisonettes
Installing solar panels on flats and maisonettes involves common areas and shared structures. You will typically need both freeholder or management company approval and planning permission.
Commercial and industrial buildings
Different permitted development rules apply to commercial properties. Larger commercial systems may need planning approval. See the commercial section below.
Solar farms
Ground-mounted solar farms and large-scale installations always require full planning permission. This applies to any installation intended for commercial electricity generation rather than self-consumption.
Commercial and agricultural solar panel planning rules
Commercial and agricultural buildings have their own set of permitted development rights, which differ from residential rules. The permitted development rights are generally more generous for roof-mounted systems on business premises.
For business premises, roof-mounted panels are typically permitted development provided they meet similar conditions to residential installations (not protruding more than 200mm, not exceeding the highest part of the roof). The area limits for commercial rooftop installations are more generous than residential limits.
| Building type | Permitted development | Notes |
|---|---|---|
| Offices, retail, and light industrial | Generally permitted with conditions | Must meet 200mm protrusion and highest part of roof rules |
| Agricultural buildings | Generally permitted with conditions | Panels on farm buildings (sheds, barns) are typically permitted development |
| Schools and community buildings | Varies by local authority | Check with your planning department |
| Ground-mounted solar farms | Not permitted development | Full planning permission required |
DNO grid connection
Planning permission and grid connection are separate processes. Commercial systems over 50 kWp may need grid connection approval from your local Distribution Network Operator (DNO) regardless of whether planning permission is required. Your installer will advise on the G99 application process for commercial systems.
How to apply for solar panel planning permission
If your property does require planning permission for solar panels, here is what the application process looks like.
| Step | Details | Timeline |
|---|---|---|
| 1. Pre-application advice | Contact your local planning authority to discuss your proposal before submitting. Most councils offer a pre-application advice service. | 1-2 weeks |
| 2. Prepare your application | You will need site plans, drawings showing panel placement, and a description of the proposed works. Your installer can help prepare these. Applications can be submitted via the Planning Portal (planningportal.co.uk). | 1-2 weeks |
| 3. Submit the application | Submit to your local planning authority via the Planning Portal with the application fee. | Application fee ~£258 (householder) |
| 4. Neighbour consultation | The council will notify neighbours and invite comments on the application. | 21-day consultation period |
| 5. Decision | The planning authority will issue a decision. They may request additional information, which extends the timeline. | Within 8 weeks |
Let your installer guide you
Experienced MCS-certified installers deal with planning questions regularly. They will assess your property during the survey stage and advise on whether planning permission is needed. Some installers will help prepare planning applications if required, or can recommend a planning consultant.
Practical tips for solar panel planning in the UK
Check with your local authority if unsure
If there is any doubt about whether your property qualifies for permitted development, contact your local authority planning department. They can confirm your property status and whether any special conditions apply. A quick phone call can save significant time and expense.
Your installer will know the rules
MCS-certified installers are well versed in permitted development rules. During the site survey, they assess whether your property qualifies. If planning permission is needed, they will tell you before any work begins.
Do not assume you are exempt if you have a listed building
Listed buildings and buildings in conservation areas are specifically excluded from permitted development rights for solar panels. Installing without permission on a listed building is a planning offence and could result in enforcement action and a requirement to remove the panels.
Keep documentation for your EPC rating
After installation, keep records of the system specification, installation date, and any planning correspondence. This documentation is useful when updating your Energy Performance Certificate (EPC) and for any future property sale.
Planning permission is separate from the MCS certification
The MCS certification process does not check planning status. It is your responsibility (and your installer's) to ensure the installation complies with planning rules. MCS certification does not mean planning approval.
Consider a Lawful Development Certificate
If you want written confirmation that your installation is permitted development, you can apply to your local authority for a Lawful Development Certificate (LDC). This costs approximately £129 and provides a formal determination of whether planning permission is required.
Frequently Asked Questions About Solar Panel Planning Permission
Do I need planning permission for solar panels in the UK?
Most residential solar panel installations in the UK are classed as permitted development and do not need planning permission. In England, under the General Permitted Development Order 2015 (Part 14), you can typically install roof-mounted solar panels without any planning application, provided your home is not a listed building and is not in a conservation area, AONB, or other designated area.
What are the permitted development conditions for residential solar panels?
For roof-mounted panels, the main conditions are: panels must not protrude more than 200mm beyond the roof plane, must not extend above the highest part of the roof (excluding the chimney), and on flat roofs must not be visible from a highway. Ground-mounted panels must not exceed 9 m² in area, 4 metres in height, and must be at least 5 metres from any boundary.
Can I put solar panels on a listed building?
Listed buildings are not covered by permitted development rights for solar panels. You must apply for both planning permission and listed building consent from your local authority before installing solar panels. A pre-application consultation is recommended, as the authority will consider the impact on the character of the building.
Do I need planning permission for ground-mounted solar panels?
Ground-mounted solar panels are permitted development provided the total area does not exceed 9 m², the height does not exceed 4 metres, and they are at least 5 metres from any property boundary. They must not be installed within the curtilage of a listed building or on a scheduled monument. Anything larger requires a planning application.
What about solar panels in a conservation area?
Properties in a conservation area, Area of Outstanding Natural Beauty (AONB), National Park, the Broads, or World Heritage Site face additional restrictions. Panels on a wall or roof slope forming the principal or side elevation and visible from a highway may require planning permission. Panels on the rear of the property are generally acceptable. Check with your local planning authority for specific guidance.
Do commercial buildings need planning permission for solar?
Commercial buildings have their own permitted development rights. Roof-mounted panels on business premises are generally permitted development under similar conditions to residential installations. However, larger commercial solar farms and ground-mounted systems require full planning permission. Commercial systems over 50 kWp may also need DNO grid connection approval.
How much does a planning application cost?
The standard householder planning application fee for solar panels is approximately £258. If you want a Lawful Development Certificate to confirm your installation is permitted development, that costs approximately £129. Pre-application advice from your local authority may be free or involve a small charge. Your installer can advise on whether any application is needed.
Can my installer handle the planning permission process?
Most MCS-certified installers will advise you on whether planning permission is needed during the site survey. Some installers will help prepare and submit planning applications if required, while others may recommend a planning consultant. Either way, your installer should confirm the planning status before beginning any work.
Related Guides
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Installation Guide
What to expect from the installation process.
Solar Incentives
0% VAT, Smart Export Guarantee, ECO4, and business capital allowances.
Commercial Solar
Solar panels for UK businesses: costs, capital allowances, and ROI.
Sources
- Planning Portal: Solar Panels Permitted Development: planningportal.co.uk
- UK Government: Permitted Development Rights for Householders: gov.uk
- MCS: Find a Certified Installer: mcscertified.com
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.
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