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Most UK homeowners don’t need planning permission for solar panels. Roof-mounted installations fall under permitted development rights in the majority of cases, meaning you can go ahead without applying to your local council.
The main exceptions are listed buildings, some conservation areas, and ground-mounted systems above a certain size. But the rules matter, and getting them wrong can mean that you need to remove the system at your own cost. This guide covers what permitted development rights allow, where the exceptions are, and what to do if your property has restrictions.
What are permitted development rights for solar panels?
Permitted development rights are a set of rules that allow homeowners to make certain changes to their property without applying for planning permission. They exist to make it simpler to carry out routine improvements, and solar panel installation is included.
For solar panels, permitted development rights are set out under Part 14 of the Town and Country Planning (General Permitted Development) (England) Order 2015. As long as your installation meets the conditions below, you can proceed without planning permission.
The permitted development conditions for solar panels
To install solar panels under permitted development rights, your installation needs to meet all of the following:
| Condition: | What it means in practice: |
|---|---|
| Panels must not protrude more than 200mm from a pitched roof slope | Standard panel and mounting systems sit comfortably within this — it's rarely an issue with a professional install |
| Panels must not protrude more than 600mm above a flat roof surface | Rules were relaxed in December 2023 from 200mm to 600mm — opening up more flat roof properties |
| Panels must not extend above the highest part of the roof (excluding chimneys) | Rules were relaxed in December 2023 from 200mm to 600mm — opening up more flat roof properties |
| Panels must not be on a wall facing a highway in a conservation area | Roof panels facing away from the street are generally fine even in conservation areas |
| Panels must not be on a listed building or within its curtilage | Listed buildings require listed building consent — see below |
| Panels must be removed when no longer needed | A standard condition that applies to all permitted development solar installations |
These conditions apply in England. The rules in Wales, Scotland, and Northern Ireland are broadly similar but have some differences, always check with your local planning authority if you're outside England.
In practice, a professionally installed roof-mounted solar system on a standard UK home will meet all of these conditions without any special effort. Your OVO installer confirms compliance as part of every installation.
Not sure whether your home needs planning permission? OVO's free home survey checks this as part of the assessment before you commit to anything.
Solar panels in a conservation area: what are the rules?
Living in a conservation area does not automatically mean you need planning permission for solar panels. Permitted development rights still apply in most conservation areas; the key restriction is that panels must not be installed on a wall that faces a highway. This includes roads, footpaths, and public rights of way.
Roof-mounted panels that aren't visible from the street are generally fine under permitted development in conservation areas. If your roof faces away from the road, you're unlikely to need any special permission.
Article 4 Directions
Some conservation areas have an Article 4 Direction in force, which removes certain permitted development rights and requires you to apply for full planning permission instead. Article 4 Directions are applied by local authorities to protect areas of particular character.
Check with your local council before assuming you can proceed. Your OVO survey will flag any Article 4 restrictions relevant to your property.
What if I need to apply for planning permission in a conservation area?
If your installation doesn't fall under permitted development, you'll need to submit a planning application to your local authority. The council will assess the visual impact of the panels on the character of the conservation area. Applications that use low-profile, roof-integrated designs tend to fare better. Expect a decision within 8 to 13 weeks.
Solar panels on listed buildings
If your home is a listed building, you'll need listed building consent before installing solar panels, regardless of whether the installation would otherwise qualify as permitted development. This applies to all grades of listing: Grade I, Grade II*, and Grade II, as well as buildings within the grounds of a listed property.
Installing solar panels on a listed building without consent is a criminal offence. The local authority can require removal at your expense.
That said, listed building consent is granted regularly. Historic England actively supports solar panels on listed buildings, and applications succeed when they can show the installation is reversible, doesn't substantially alter the building's appearance, and is sensitively positioned. Ground-mounted panels in the grounds of a listed building can also be a practical alternative to a roof installation.
Speak to your local authority's conservation team before applying, they can advise on what approach is most likely to succeed for your specific building.
Listed building consent is separate from planning permission. You may need one or both depending on your installation. Always confirm with your local authority before any work begins.
Ground-mounted solar panels: do they need planning permission?
Ground-mounted solar panels have their own permitted development conditions, which are stricter than roof-mounted systems. You can install one standalone ground-mounted system under permitted development if all of the following apply:
• The array is no larger than 9 square metres in total surface area
• No single dimension of the array exceeds 3 metres
• The installation is no higher than 4 metres
• It is positioned at least 5 metres from any boundary of the property
• It is not installed within the curtilage of a listed building
• In a conservation area or World Heritage Site, it is not visible from a highway
If you want to install a second ground-mounted system, or if your first system doesn't meet these conditions, you'll need to apply for planning permission. The 5-metre boundary setback is often the most challenging condition for smaller gardens.
Only one standalone ground-mounted installation qualifies as permitted development per property. Any additional system requires planning permission regardless of size.
Does planning permission work differently in Scotland and Wales?
The permitted development rules in Scotland and Wales are broadly similar to England but have some differences in detail, particularly around flat roofs, system size, and conservation area restrictions.
In Scotland, panels installed at 50kW or above require prior approval from the local planning authority, even if they would otherwise be permitted development. The flat roof protrusion limit is 1 metre rather than 600mm.
In Wales, the rules largely mirror England but are administered separately. If you're in Wales, always confirm the current position with your local planning authority or check the Welsh Government's planning guidance directly.
Northern Ireland has its own planning system. Check with the Planning Service for current rules.
Quick planning permission reference
| Scenario: | Planning permission needed? | What to do: |
|---|---|---|
| Standard roof-mounted panels, typical UK home | No — permitted development | Proceed. Installer notifies DNO after installation. |
| Roof-mounted panels in a conservation area | Usually no — check for Article 4 Direction | Confirm with local council before booking installation. |
| Any solar panels on a listed building | Yes — listed building consent required | Contact local authority conservation team before applying. |
| Ground-mounted system under 9m² and 4m high | No — permitted development if conditions met | Check the full conditions above, particularly the 5m boundary rule. |
| Ground-mounted system exceeding conditions | Yes — full planning application required | Submit householder planning application to local authority. |
| Flat roof — panels under 600mm above roof surface | No — permitted development (post-Dec 2023) | Structural survey recommended regardless of planning position. |
| Second ground-mounted system on same property | Yes — regardless of size | Submit planning application before proceeding. |
This table covers England. Rules differ in Scotland, Wales, and Northern Ireland. Always check with your local planning authority if you're unsure.
Frequently asked questions
Do I need planning permission for solar panels?
Most UK homeowners do not. Roof-mounted solar panels fall under permitted development rights in the majority of cases, meaning you can install them without applying to your local council. Exceptions include listed buildings, some conservation areas with Article 4 Directions, and ground-mounted systems that exceed the permitted development conditions.
Do solar panels need planning permission in a conservation area?
Usually no. Permitted development rights still apply in most conservation areas, provided panels are not installed on a wall facing a highway. Some conservation areas have an Article 4 Direction that removes these rights — check with your local council to confirm whether yours does.
Can you get solar panels on a listed building?
Yes, but you need listed building consent from your local planning authority before any work begins. Consent is frequently granted when the installation is reversible and doesn't significantly alter the building's appearance. Contact your local authority's conservation team for advice before applying.
Do you need planning permission for a ground-mounted solar panel?
Not if it meets the permitted development conditions: under 9m², under 4m high, at least 5m from any boundary, and not visible from a highway in a conservation area. If it exceeds any of these conditions, or if it would be a second ground-mounted system on the same property, you'll need to apply for planning permission.
Does OVO handle planning checks?
Yes. OVO's free home survey includes a check of any planning requirements specific to your property — including whether you're in a conservation area, whether an Article 4 Direction applies, or whether listed building consent might be needed. We flag any issues before you commit to an installation.
Book OVO's free home survey. We'll check your planning position, assess your roof, and give you a fixed price — with no obligation to proceed.