Do You Need Planning Permission for Solar Panels?

Most homes in Great Britain can fit rooftop solar panels without a planning application, because the work usually counts as permitted development. However, the rules differ in England, Scotland and Wales. Conservation areas, listed buildings and flats are the main exceptions, so check your address before you book a survey.

England: the rules changed in August 2026

An amending order took effect in England on 27 August 2026. It splits the rules for houses from those for blocks of flats. The Planning Portal explains the changes in plain terms.

For houses, the order allows larger installations in a wider range of places on the building or in its grounds. It also brings plug-in solar into the legislation. However, plug-in solar cannot go on wooden structures or cladding, which cuts the fire risk.

We do not quote the new size limits here. We could not confirm every figure from the legislation, and a wrong number could cost you. Read the current Planning Portal guidance, then ask your council to confirm.

The earlier rules still help

Projects that no longer qualify under the new order can use the older rules until 26 August 2027. Under those earlier rules, panels on a house should do the following.

• Project no more than 200mm from the roof slope or wall surface.
• Sit no higher than the highest part of the roof, not counting the chimney.
• Stay within 600mm above the highest part of a flat roof.

Ask your installer which set of rules applies to your job. Get the answer in writing, since the rules have just changed. A good installer will already know the difference between the old and new regimes.

Flats in England

For blocks of flats, the 2026 order adds a prior approval step for stand-alone solar. You apply to the local planning authority before you start. The legislation sets out the detail.

You will also need your freeholder or building manager to agree. Planning rules cover the council side, but they do not override your lease. Check the lease before you ask for any quotes.

Scotland

In Scotland, panels on a home are permitted development if they stick out no more than a metre from where they attach. That comes from mygov.scot. In a conservation area, you need planning permission. A listed building needs listed building consent too.

Scottish yields and network areas differ from the south, yet the planning route is similar. Our pages on solar panels in Edinburgh and how solar performs in Glasgow show the local figures.

Wales

In Wales, panels on a roof or wall should project no more than 200mm. They should not rise above the ridgeline. Welsh Government guidance sets this out.

Listed buildings need planning permission, and probably listed building consent as well. Ask the council early, because it can confirm what applies. In a conservation area or World Heritage Site, panels on a principal or side wall that faces the road need planning consent. For local detail, see our page on solar panel installers serving Cardiff.

Conservation areas and listed buildings

Special sites cause most planning problems, because the general rights do not reach them. England’s earlier rules barred panels on a wall facing the road in a conservation area or World Heritage Site. They also excluded the grounds of a listed building. Scotland and Wales have their own limits, as above.

Older city centres often include conservation areas. If your home is in a place like York, see our guide to solar panels in York. Then check your street’s status. Your council can confirm whether extra limits apply to your address.

If you need permission, apply before any work starts.

How to check your own address

Work through these steps in order, while keeping a note of each answer.

1. Find out whether your home is listed or in a conservation area. Your council’s planning pages will say.
2. Read the guidance for your nation, using the links above.
3. Ask your installer how the rules apply to your roof, and ask for it in writing.
4. If anything is unclear, ask your local planning authority before work begins.

This takes little time. Moreover, a written answer is useful if anyone questions the work later.

Other rules that apply

Planning is not the only consent, because building and electrical safety rules apply as well. In England, Part P covers roof panels. A registered competent person, a third-party certifier or building control must certify the work.

The roof must also take the load. The MCS standard (MIS 3002) says a suitably competent person must check the roof structure for the weight of the system. Your installer should do this as part of the survey.

Your network operator must also hear about the system, since it runs the local grid. Our guide to G98 and G99 connection explains which route applies. If you add storage at the same time, read whether solar batteries are worth it first. To size the array to fit your roof, see how many solar panels you need.

Next steps

Choose an installer who can say which rules apply to your home. They should also be MCS-certified, because that matters for export payments too. Our guide to MCS-certified solar installers shows how to check. Our page on solar panel installation lists what a survey should cover.

When you are ready, you can ask for quotes through our form. We store your enquiry in a central dashboard, because nobody is contacted automatically.