Do you need planning permission for solar panels?

Usually not. In every UK nation, solar panels on the roof of a house are "permitted development": you can fit them without applying for planning permission, as long as they stay within set size limits. The limits differ between England, Scotland, Wales and Northern Ireland, and England changed its rules on 27 August 2026. You will need permission or consent if your home is listed, if it is in a World Heritage Site in Scotland, if your council has removed permitted development rights for your property, or if the panels go beyond the limits for your nation.

Permitted development also comes with conditions. In every nation, panels must be removed when they are no longer needed; in England and Wales they must also be placed, as far as practicable, where they least affect the look of the building and the area.

The short answer for each nation

England: the rules since 27 August 2026

England's rules are in Part 14 of the General Permitted Development Order, as changed by SI 2026/896 from 27 August 2026. For panels on a house, or on a building such as a garage within its grounds, you don't need planning permission if:

• on a pitched roof, the panels stick out no more than 0.2 metres from the roof slope and no part is higher than the highest part of the roof (chimneys excluded);
• on a flat roof, the highest part is no more than 0.6 metres above the highest part of the roof;
• on a wall, they stick out no more than 0.4 metres, or 0.2 metres where the wall is next to a highway;
• on a balcony enclosure or a roof enclosure (such as a balustrade, railing or parapet on the roof), the same 0.4 m and 0.2 m limits apply, with 0.2 m where the enclosure is next to a highway;
• the house is not a listed building and the site is not a scheduled monument.

The siting and removal conditions described above apply.

Flat roofs on protected land. If the flat roof is in a conservation area, a National Park, the Broads, an Area of Outstanding Natural Beauty or a World Heritage Site, you must apply to the council before you start, for a decision on whether its prior approval is needed for the panels' appearance. This is not a full planning application, but it is a step you can't skip.

Blocks of flats have their own limits: 0.2 metres from a wall or pitched roof, no higher than the roof on a pitched roof, 0.6 metres above a flat roof, nothing on a wall that fronts a highway in a conservation area or World Heritage Site, and nothing on a listed block. If you own a flat on a lease, you may also need permission from your landlord, freeholder or management company.

The old rules still count until 26 August 2027. If a project was allowed under the rules in force before 27 August 2026 but is not allowed under the new ones, you can still carry it out under the old rules until the end of 26 August 2027.

Panels in the garden

In England, a free-standing array in the garden of a house is permitted development if the panels cover no more than 9 square metres and stay under the lowest height limit that applies:

It is not permitted development within the grounds of a listed building or on a scheduled monument. In a World Heritage Site it cannot be closer to a road than the house or within 5 metres of the boundary. In a conservation area, an array closer to the road than the house needs a prior approval application; so does one within 5 metres of the boundary on the protected land listed above.

In Wales the limits are one array per house, no more than 9 square metres, no side longer than 3 metres and no more than 4 metres high. Within 5 metres of the boundary it must be no taller than 2 metres and not within 5 metres of a highway, and in a conservation area or World Heritage Site it can't stand between the house and a road. In Northern Ireland, one array of up to 14 square metres, no more than 2 metres high and no closer to a road than the house. In Scotland, free-standing panels come under a different class of permitted development with its own limits; ask your council before you buy.

Conservation areas and World Heritage Sites

A conservation area does not rule solar out in any UK nation. Each nation protects the side of the house the public sees, in its own way:

• England: roof panels are allowed, even on a roof slope facing the road, but not on a wall, balcony or roof enclosure that fronts a highway; flat roofs need prior approval (see above).
• Scotland: panels are allowed on houses and flats, but not on the principal elevation (normally the front) or on a side elevation that fronts a road. In a World Heritage Site, panels on a Scottish home or on a building in its grounds are not permitted development.
• Wales: panels are not allowed on a wall forming the front or side of the house that fronts a highway, or on the wall of an outbuilding that fronts a highway.
• Northern Ireland: panels are not allowed on a roof slope or wall that faces and is visible from a road, or on a flat roof where any part is visible from a road.

Check the exceptions below too, especially if you plan to use the front of the house.

Listed buildings

If your home is listed, assume you need consent. In England, permitted development does not apply to solar panels on a listed house, on a building within its grounds, or as a free-standing array in those grounds. Separately, any works that would affect a listed building's character as a building of special architectural or historic interest need listed building consent, and carrying them out without it is a criminal offence.

Scotland and Northern Ireland also exclude listed buildings (Northern Ireland allows the work once listed building consent has been granted). The Welsh Government says installing panels on a listed building will need planning permission and is likely to need listed building consent.

Consent is not a refusal in advance. Before you commission a design, ask your council's conservation officer which positions they would consider and what drawings or details they need. Councils may charge a fee for pre-application advice.

Scotland

Scotland's rules have been in force since 24 May 2024 (SSI 2024/102). Panels on a house or a flat are permitted development if they stick out no more than 1 metre from the outer surface of the wall, roof, ridge or chimney. They are not permitted on a listed building or within its grounds, or in a World Heritage Site, and the conservation area limit above applies.

Panels on an outbuilding, such as a garage or shed, may stick out up to 500 millimetres, but not if the outbuilding is in front of the house, is listed or within the grounds of a listed building, or is in a World Heritage Site.

Wales

Wales still uses the limits set in 2012 (gov.wales guidance). On a house, panels on a wall or pitched roof may stick out no more than 20 centimetres and must not rise above the highest part of the roof. On a flat roof they must be at least 1 metre from the edge and no more than 1 metre above the roof.

These permitted development rights apply to houses. The Welsh Government advises anyone in a flat to contact their council for guidance.

Northern Ireland

Northern Ireland's rules are in Part 2 of the Planning (General Permitted Development) Order (Northern Ireland) 2015. Roof panels on a house or an outbuilding are permitted development if:

• on a roof slope that faces and is visible from a road, they stick out no more than 20 centimetres (the rules set no projection limit for other slopes);
• they are no higher than the ridge of a pitched roof, and no more than 1.5 metres above a flat roof;
• no part extends beyond the edge of the roof.

Panels on walls are also covered, with limits on walls near the boundary and on chimneys. For both, the panels' main purpose must be to supply the house. The rules are written for a house, so ask your council if you live in a flat.

Plug-in solar and planning

A plug-in solar kit counts as solar panels for planning in England, so the same wall, balcony and garden limits apply when you fix one to your home. England adds one rule of its own: plug-in panels are not permitted development on a wooden wall, balcony or enclosure, on any part of a house or block of flats clad in timber, or on a wooden fence or gate.

The Scottish, Welsh and Northern Irish rules we read have no plug-in category, so check the general limits and ask your council about a kit on a balcony. The kits themselves have safety and one-per-household rules that are separate from planning; our plug-in solar guide explains them and our plug-in solar kits guide compares the kits on sale. Plug-in solar is legal only in Great Britain for now.

When you need to ask the council anyway

Meeting the limits isn't always enough. You need to apply for planning permission if:

• your council has removed permitted development rights in your area (in England and Wales, with an Article 4 direction), most often in conservation areas;
• a condition on your home's original planning permission removed permitted development rights. The council's planning register will show it;
• your panels are outside the limits for your nation.

If you are unsure, you can apply for a lawful development certificate: a legally binding decision from the council that the work is permitted development.

Separately, if you rent or own a leasehold flat, you may need your landlord's, freeholder's or management company's permission, whatever the planning position.

Building regulations and telling the network operator

Planning decides whether panels may go on the building; building regulations decide whether the work is safe. In England, the Planning Portal says building regulations will normally apply to rooftop panels: the roof must be checked and shown to carry the extra weight, and some strengthening may be needed. The electrical work falls under Part P, the building regulation for electrical safety in homes. An installer registered with a competent person scheme can self-certify the work it is registered for, instead of you applying to building control for approval. The Welsh Government gives the same advice on the roof's load and the electrical work. In Scotland and Northern Ireland, ask your council's building standards or building control team whether an approval is needed.

The network operator (your distribution network operator, or DNO) is a separate notice again. In Great Britain, for a system with up to 3.68 kW of inverter output on a single-phase supply, the installer tells the DNO no later than 28 days after the system is commissioned (switched on). Larger systems need the DNO's approval before they are connected. Plug-in kits have their own notification step, explained in our plug-in guide.

Before you sign: a planning checklist

Ask your installer to confirm each point in writing, or check it yourself with your council.

• Nation. You are working to the limits for your nation, not a guide written for England.
• Listing. Your home, and any outbuilding you plan to use, is not listed. If it is, you have spoken to the conservation officer.
• Protected area. You know whether the property is in a conservation area, a World Heritage Site or other protected land, and which walls or roof slopes face a road.
• Local restrictions. The council's planning register shows no Article 4 direction or planning condition removing your permitted development rights.
• Measurements. The installer's design states how far the panels stand off the roof or wall and their highest point.
• Prior approval. For a flat roof, or a garden array in the positions described above, on protected land in England, the prior approval application has been made before work starts.
• Permissions. You have written consent from your landlord or freeholder if you need it.
• Building regulations. The installer will self-certify the work through a competent person scheme, or building control has approved it.
• Network operator. The installer will notify or apply to your DNO.

Next steps

Once you know where the panels can go, our solar calculator estimates what they will produce on your roof, with its assumptions shown, and our solar panel cost guide explains installed prices. For a flat roof, read our guide to solar panels on flat roofs; to check who will design and fit the system, see choosing a solar installer.

Planning permission FAQs

Can you have solar panels in a conservation area?

Usually, yes, but not on the road-facing walls or roof slopes your nation's rules protect, and in England flat-roof panels need prior approval. In Scotland, panels on a home in a World Heritage Site are not permitted development.

Can you put solar panels on a listed building?

Only with consent: in England and Scotland permitted development does not cover listed homes, Northern Ireland requires listed building consent first, and the Welsh Government says planning permission will be needed. Speak to your council's conservation officer first.

Do ground-mounted solar panels need planning permission?

Not usually at a house: in England an array of up to 9 square metres is permitted development within height limits of 1 to 4 metres. In Scotland, ask your council.

Do I need to tell the council before I install solar panels?

Not if the panels are within permitted development, except for the prior approval step for some flat roofs and garden arrays on protected land in England. A lawful development certificate confirms it in writing.

Do solar panels need building regulations approval?

Normally yes in England and Wales, for the roof's load and the electrical work; in England an installer in a competent person scheme can self-certify. In Scotland and Northern Ireland, ask your council.