The short answer: usually not. Solar panels on a house or block of flats are normally "permitted development", which means you do not need to apply, as long as the installation stays within set limits. Listed buildings always need consent.
This page describes the rules in England. Scotland, Wales and Northern Ireland have their own versions, so check with your local planning authority.
The limits for panels on a roof or wall
To count as permitted development:
- panels must not be installed above the highest part of the roof, not counting the chimney
- panels must project no more than 200 mm from the roof slope or wall surface
- panels must not be on a building within the grounds of a listed building, or on a site designated as a scheduled monument
Two conditions also apply:
- the equipment should be sited, as far as practicable, to minimise its effect on the appearance of the building and the area
- equipment that is no longer needed should be removed as soon as reasonably practicable
Conservation areas
Permitted development rights still apply in a conservation area, with one main exception: panels cannot be fitted to a wall that fronts a highway without planning permission. Panels on a roof are usually still allowed.
Some councils have removed these rights in particular areas using an "Article 4 direction". If one applies to your home, you will need planning permission. Your council can tell you.
Panels on a flat roof in a conservation area may need prior approval from the council.
Listed buildings
You need listed building consent to fit solar panels to a listed building. Carrying out work without it is a criminal offence. Panels on a building within the grounds of a listed building need planning permission.
Panels in the garden
Stand-alone panels in the grounds of a house are also permitted development within limits. These include a maximum height of 4 metres, a position at least 5 metres from the boundary, and an array no larger than 9 square metres. Only the first stand-alone installation is covered.
Flats and leasehold homes
Planning rules are separate from permission under your lease. Leaseholders usually need consent from the freeholder or management company.
Building regulations
Even when planning permission is not needed, building regulations normally apply. They cover whether the roof can carry the weight and the safety of the electrical work. A certified installer will usually deal with this for you.
If you want certainty
You can apply to your council for a Lawful Development Certificate, which confirms in writing that your installation does not need planning permission. It is optional, and useful if you later sell.
Sources
Correct at the time of publication, 14 November 2026.
- Planning Portal, solar equipment mounted on a house or block of flats: https://www.planningportal.co.uk/info/200130/common_projects/51/solar_panels/2
- Your local council's planning department can confirm whether an Article 4 direction, listing or conservation area applies to your home.