Most home solar installations in England do not need a planning application, because they fall under permitted development rights. Those rights changed on 27 August 2026, and they still do not cover every property. Conservation areas, listed buildings, flats and leasehold homes all carry extra checks. This guide sets out what the rules now say, where they stop and how to check your own roof before you sign anything.
One point first. Permitted development is an English planning rule. Wales, Scotland and Northern Ireland run their own planning systems, so if your property is outside England, ask your local council what applies before relying on anything below.
TL;DR
- For a house in England, solar panels are usually permitted development, so no planning application is needed, as long as the conditions are met.
- The rules changed on 27 August 2026: houses and blocks of flats are now treated separately, and panels on walls, balconies and roof enclosures can project further than before.
- Conservation areas, Article 4 directions, listed buildings and protected landscapes can remove or limit your rights, so check with your council first.
- Planning permission is not the only hurdle: building regulations, your freeholder or landlord and your grid connection all matter too.
- A 12-month transitional period runs until 26 August 2027 for projects that no longer qualify under the new criteria.
Table of Contents
- What permitted development means for solar
- What changed on 27 August 2026
- The rules by type of installation
- When permitted development does not apply
- Planning permission is not the only box to tick
- A five-step check before you book an installer
- Our perspective on the 2026 changes
- Getting a survey from us
- FAQ
- Sources
What permitted development means for solar
Permitted development rights are a national grant of planning permission. If your project stays inside the limits set out in law, you do not have to apply to the council. For domestic solar, the relevant law is the General Permitted Development Order, which was amended by a 2026 order to change how solar equipment on domestic premises is treated.
The Planning Portal states that solar panels and equipment on residential buildings and land may be permitted development, with no need to apply to the local authority. Note the word “may”. The right comes with conditions, and the conditions are where homeowners get caught out.
The long-standing conditions on the earlier version of the rules still show the thinking behind them: equipment should, so far as practicable, be sited to minimise its effect on the building’s appearance and on the amenity of the area. Panels also have to be removed as soon as reasonably practicable when no longer needed for generating electricity. Good design is part of compliance, not an extra.
What changed on 27 August 2026
The government published the changes at the end of July, and they came into force on 27 August 2026. The headline points for homeowners are these:
- Houses and blocks of flats are now separate. The eligibility rules are split, and houses gain the potential for larger installations in more places on the building or within the property boundary.
- Wall, balcony and roof enclosure panels can project further. For a dwellinghouse the limit is now 0.4 metres, or 0.2 metres where the panels abut a highway or sit on a pitched roof. That makes better mounting angles possible on surfaces other than the roof slope.
- Stand-alone arrays are easier. For stand-alone solar on a dwellinghouse, the 3-metre dimension limit has been removed and the 5-metre distance from the boundary no longer applies, except in World Heritage Sites.
- Plug-in solar is addressed directly. Plug-in systems, which connect through a standard socket, are clarified as possible, but not on wooden walls, balconies or enclosures, or on any exterior part clad in timber. The aim is to reduce fire risk.
- Transitional protection. A project that would not qualify under the new criteria can still use the rules as they stood before 27 August 2026, until 26 August 2027.
The Planning Portal also updated the prior approval application routes for solar equipment, and its online service changed on 17 September 2026. If a council asks for prior approval, that is the route.
The rules by type of installation
| Where the panels go | What the rules say (England, houses) | Extra step |
|---|---|---|
| Pitched roof | Panels should not project more than 0.2 m from the roof plane | Check conservation area, listed status and Article 4 first |
| Flat roof | Panels can generally rise up to 0.6 m above the highest point of the roof, excluding the chimney | Prior approval from the council on Article 2(3) land |
| Wall, balcony or roof enclosure | Up to 0.4 m projection, or 0.2 m if abutting a highway | No timber surfaces for plug-in solar |
| Stand-alone array in the garden | 3 m dimension limit and 5 m boundary rule removed for dwellinghouses | Boundary rule still applies in World Heritage Sites |
The flat roof figure and the prior approval requirement come from the same Planning Portal guidance. “Article 2(3) land” covers national parks, Areas of Outstanding Natural Beauty and World Heritage Sites. A lot of Dorset and Devon sits inside such designations, so a flat roof there is not a given.
If your home has a flat roof, our guide to solar systems for flat roof properties explains the mounting choices in more detail.
When permitted development does not apply
This is the part most generic guides skim. Your rights can be switched off or restricted in several situations.
Conservation areas and Article 4 directions
A council can remove permitted development rights for a particular area through an Article 4 direction. In a conservation area, changes that need no permission elsewhere may need written consent. Dorset Council says that if you live or run a business in a conservation area, you may need its written consent before making changes that would be fine in other places. The same page notes that trees in conservation areas with trunk diameters over 75mm, measured 1.5m above ground, are protected, which matters if panels or an array need tree work to avoid shading.
In Hampshire, Southampton City Council publishes its own guidance, Solar Panels and Conservation Areas, which explains the planning steps to take before installing panels on a domestic building. The details differ council by council, which is why a quick check with yours is worth the time.
Listed buildings
Listed status is a separate regime. Dorset Council’s solar page says most installations are classed as permitted development, but conservation areas and listed buildings are cases where planning permission can be needed. For a listed building, speak to the council’s conservation officer before you ask for any quote, because the position is decided case by case.
If you own an older home, our guide to solar panels for Dorset period properties covers the practical side.
Protected landscapes and visual impact
Even where the right applies, councils care about appearance. Devon’s landscape advice on solar PV notes that schemes are generally more likely to succeed with community support and encourages early engagement on location and design. That advice is aimed mainly at larger schemes, but the principle holds for a domestic roof in a sensitive setting: a tidy, symmetrical layout on the least visible slope is easier for everyone to accept.
Farm and rural buildings follow different thinking. Our note on solar power for agricultural buildings in Devon is a better starting point for those.
Flats and leasehold homes
The 2026 changes treat flats separately, and the limits for a block are not the same as for a house. Even where the project is permitted development, the Planning Portal advises that leaseholders often need separate approval from the freeholder, landlord or management company before work starts. Planning law does not override your lease. Get written consent first, or you may be asked to take the system down.
Planning permission is not the only box to tick
A “no planning needed” answer does not mean “no checks needed”. Three other things are always in play.
Building regulations. These are separate from planning. New Forest District Council’s guidance says solar installations still have to meet building regulations, and the roof’s structural capacity is the main concern, because panels, rails and fixings add weight. We cover this in our article on common roof structure challenges for solar. If you want to see how engineers think about the structures that carry solar arrays, this engineering consultancy’s page on solar panel supporting structures gives a general idea, though it is written for Gulf projects, so UK rules and loadings will differ.
Electrical safety and grid connection. Planning has nothing to say about the wiring. The system must be installed and tested properly, and your network operator may need to be notified or asked to approve the connection, depending on the size of the system and any battery.
Insurance and mortgage. Tell your insurer and, if relevant, your lender. This is practical advice rather than a legal rule, but it avoids awkward conversations later.
A five-step check before you book an installer
- Confirm the property type. House, flat, leasehold, listed? Each leads to a different answer under the 2026 rules.
- Check designations. Ask your council, or search its website, for conservation area, Article 4, Article 2(3) land and listed status. Write down the answer and date it.
- Measure the projection. Panels on a pitched roof should sit no more than 0.2 m off the roof plane. Ask the installer for the mounting height in the quote.
- Get consent from third parties. Freeholder, landlord, management company. In writing.
- Ask for a roof assessment. The installer should confirm the roof can take the load and record that assessment.
If the council confirms you do not need permission, you can ask for a lawful development certificate, which is a formal record that the work was lawful. The Planning Portal explains how to apply, and it can help when you sell.
Our perspective on the 2026 changes
We install solar and battery systems across Dorset, Hampshire and Devon, so planning questions come up before almost every survey. Here is how we see it.
The new rules are good news for a typical house. Allowing a 0.4 m projection on walls and balconies means we can angle panels properly where a roof is shaded or awkward, instead of settling for a poor layout. The removal of the stand-alone array limits opens up garden systems that were previously hard to fit inside the old rules.
The bigger risk is not the rule itself, it is assuming the rule applies. The jobs that go wrong are almost always the ones where nobody asked whether the house was in a conservation area, or whether the lease needed consent. So our surveys start with the paperwork, not the ladder. We check the designation, ask about the lease, and look at the roof structure before we talk about panel counts.
The 12-month transitional window is also worth understanding. If your project fits the old rules better than the new ones, you may be able to use them until 26 August 2027. We would rather tell you which route suits your property than guess.
Finally, design matters. A neat array that respects the building usually draws no complaints from neighbours or council officers, and it looks better for the life of the system. Our own view is that planning-friendly and good-looking tend to be the same thing.
— Simon
Getting a survey from us
We are electrical contractors working in Dorset, Hampshire and Devon, and we are MCS and NICEIC accredited. On a solar survey we check the roof, the electrics and the planning position together, so you get one clear answer. See our solar installation service or get in touch via our main site. Once the system is running, our Solar & Battery Service & Maintenance Plan is £175 per year.
If you are comparing plans in the meantime, how solar planning works: a homeowner’s guide and our note on the 200mm limit are useful companions to this page.
FAQ
Do you need planning permission for solar panels in the UK?
For most houses in England, no, because the installation is permitted development, provided it meets the conditions. Conservation areas, Article 4 directions, listed buildings and some protected landscapes can change that. Planning is devolved, so the rules in Wales, Scotland and Northern Ireland are set separately.
How far can solar panels stick out from the roof?
On a pitched roof of a house in England, the limit is 0.2 metres from the roof plane. For walls, balconies and roof enclosures on a dwellinghouse it is now 0.4 metres, dropping to 0.2 metres where the panels abut a highway. Flat roofs allow up to 0.6 metres above the highest point, excluding the chimney.
Do the 2026 changes apply to flats?
The 2026 changes split the rules for houses and blocks of flats, so flats have their own criteria. Leasehold owners also usually need consent from the freeholder or management company whatever the planning position. Check both before ordering a system.
Can I install plug-in solar on any wall?
No. The 2026 amendment bars plug-in solar on wooden walls, balconies or enclosures, and on any exterior part clad in timber, to reduce fire risk. Brick, render and other non-timber surfaces are not caught by that restriction, but the other conditions still apply.
Sources
- The Town and Country Planning (General Permitted Development) (England) (Amendment) Order 2026
- Planning Portal: Solar panels planning permission
- Planning Portal: Solar equipment mounted on a house, block of flats or building
- Planning Portal blog: Changes to permitted development rules for domestic solar installations
- GPDO 2015, Part 14 Class A, condition A.2
- Dorset Council: Conservation areas overview
- Dorset Council: Switch Together Solar
- Southampton City Council: Solar panels and conservation areas
- New Forest District Council: Solar panels
- Devon County Council: Part B, Solar PV energy
