Solar panels on a slate roof or in a conservation area: a holiday-let owner’s guide

Quick answer

In England, most solar panels on a holiday cottage roof are still permitted development, including in a conservation area, a National Park or an Area of Outstanding Natural Beauty. Four things take a property out of that right or add a step: the building is listed, the council has withdrawn the right with an Article 4 direction, the original planning permission removed it by condition, or the panels would sit on a wall, balcony or roof enclosure that fronts a highway inside a conservation area.

Key takeaway: the roof material is not the test. A slate roof matters for how the panels are fixed and how closely a conservation officer looks at them, but the planning question is decided by the designation and by the rules in force. Those rules changed on 27 August 2026, and the Planning Portal says you may follow either the old or the new rules until 27 August 2027.

What changed on 27 August 2026

The Planning Portal sets out the limits for solar equipment fixed to a house. They apply to a holiday cottage that is a house for planning purposes (see the section on that below).

Where the panels go	England, house, from 27 August 2026
Pitched roof	No higher than the highest part of the roof (chimney excluded) and no more than 200 mm out from the roof slope
Flat roof	Highest part no more than 600 mm above the highest part of the roof (chimney excluded); prior approval needed on National Park, Broads, AONB, conservation area and World Heritage Site land
Wall, balcony or roof enclosure abutting a highway	No more than 0.2 m out from the plane of the wall
Other wall, balcony or roof enclosure	No more than 0.4 m out
Conservation area or World Heritage Site	Not on a wall, balcony or roof enclosure that fronts a highway (before the change, the restriction covered only a wall)
Listed building	Not permitted development: planning permission and listed building consent

Two conditions apply everywhere: site the equipment to minimise its effect on the building’s appearance and the area’s amenity, and remove it when it is no longer needed. Plug-in solar must not be fixed to a timber wall, balcony or enclosure. The Planning Portal calls its page an introductory guide and says local rules may also apply, so it is the start of the check, not the end.

Solar panels in a conservation area

A conservation area does not ban solar. The national rule is narrower than most owners expect: after 27 August 2026 the exclusion covers walls, balconies and roof enclosures that front a highway, and before that it covered only a wall. A roof slope facing the road is not excluded by that national rule.

The local rule can be tighter. A council can withdraw permitted development rights with an Article 4 direction, and many conservation areas have one. Two recorded examples show how specific they are: Coventry’s Article 4(1) direction for the Earlsdon conservation area, enacted on 21 November 2022, removes the right for solar where it is visible from the public realm on a schedule of 38 roads; and the Article 4(2) direction for the Ironbridge Gorge World Heritage Site withdraws the right for solar on dwellings in the Gorge (in force from 28 December 2012). Neither tells you anything about your village. Ask the council whether your property is covered, and ask it in writing.

A holiday-let owner has one more thing to check. Some planning permissions, often those granted for conversions and new estates, remove permitted development rights by condition. Read the decision notice for your building before you assume the national rule applies. Our location guides for Windermere and Bamburgh show how this plays out where almost every cottage sits inside a designation.

National Parks, AONBs and the Broads

Designated land does not remove the right for a pitched-roof array on a house. The extra step is for a flat roof: on National Park, Broads, AONB, conservation area and World Heritage Site land the local planning authority must give prior approval before a flat-roof array goes up. In practice the authority will look at appearance and amenity, so a discreet slope, a clean layout and a photomontage help. A National Park authority is the planning authority inside the park, which is why the guides for Bakewell and Lynton deal with it directly.

Listed holiday cottages and barns

Solar is not permitted development on a listed dwellinghouse or on a building within its curtilage, and Scheduled Monuments are excluded too. A listed cottage or barn conversion needs planning permission and listed building consent, and the conservation officer will weigh the visibility of the array, the fixings into historic fabric and whether the work can be reversed. Start with the council’s conservation officer, before the installer drawings, not after them. A refusal is not a given: many councils approve a discreet array on a rear slope, which is why we say speak to them early.

Is your holiday let a house for planning purposes?

The rules in the table are for a house. A purpose-built reception, laundry, plant room or amenity block on a small park is a different kind of building. In England, rooftop solar on a building other than a dwellinghouse or block of flats falls under a separate right (Class J of Part 14), with its own limits: on a pitched roof no more than 0.2 m out from the slope, on a flat roof no more than 1 m above the highest part, not within 1 m of the roof edge, not on a listed building, and on conservation area or National Park land a wall array may not front a highway. Microgeneration there means up to 50 kW, and anything bigger on a roof needs prior approval of its design. A site-wide array for a small self-catering park usually sits in that second regime.

Solar panels on a slate roof

A slate roof does not need a different permission. It changes the practical questions, and they are worth putting to every installer in writing:

• Fixings. How are the brackets or in-roof trays fixed, what goes through the slates, and who pays when a slate cracks?
• Structure. Has the roof structure been assessed for the extra load, and is the roof in good enough condition to carry an array for 25 years?
• On-roof or in-roof. An in-roof system sits flush and can look better on a visible slope; an on-roof system is simpler to remove. Ask which one the design assumes and why.
• Which slope. A rear or side slope out of public view is easier to consent than a street-facing one, even where the national rule would allow either. The owner of a Cotswold stone-slate cottage will find that point on the Bourton-on-the-Water page.
• Reversibility. Ask what the roof looks like once the array is removed.

Yield matters as well as appearance. A rear slope that faces north gives up output, which the cost guide shows in payback terms.

What this means for a holiday let

A holiday let adds two things to the planning check. The first is timing: scaffolding, a grid connection and roof work are easiest in a gap between bookings or in the off season, so fix the design and the consent before you choose the date. The second is the audience. A guest-facing street elevation matters to the listing photos as well as to the conservation officer, which is another reason to favour a discreet slope. The sizing, the hot tub and evening loads, and the payback sit on our main page for solar panels for holiday lets, and the funding and tax side is on the grants and funding page.

England only: Wales and Scotland

Everything above is England. Wales and Scotland run their own permitted-development rules. Welsh and Scottish rules for solar on a building other than a dwelling (Part 43 Class A in Wales, Class 6J in Scotland) have their own limits, and conservation areas, National Parks and World Heritage Sites feature in both. For a cottage in Tenby or Callander, confirm the position with the council.

Frequently asked questions

Do I need planning permission for solar panels in a conservation area?

Usually not for a roof array on a house in England. Panels on a house are permitted development in a conservation area, except on a wall, balcony or roof enclosure that fronts a highway, and except where a council Article 4 direction or a condition on the original planning permission removes the right. Check with the council before you order.

Can I put solar panels on a listed holiday cottage?

Not as permitted development. Solar on a listed dwellinghouse or a building in its curtilage needs planning permission and listed building consent, so speak to the council’s conservation officer before any design work.

Are solar panels allowed on a slate roof?

The slate itself does not change the planning position. What matters is the designation (listed, conservation area, National Park or AONB) and how the panels are fixed. Ask the installer how the fixings pass through the slates, how cracked slates are replaced and whether the roof structure has been assessed for the extra load.

Do I need permission for solar panels in a National Park or an AONB in England?

A pitched-roof array on a house is still permitted development on that land. A flat-roof array on National Park, Broads, AONB, conservation area or World Heritage Site land needs the local planning authority’s prior approval first.

Do these rules apply in Wales and Scotland?

No. The Planning Portal guidance covers England only. Wales and Scotland have their own permitted-development rules, so confirm the position with the council for a cottage in either nation.

The verdict

Check three things before you spend anything: whether the building is listed, whether the council has an Article 4 direction covering it, and whether the original planning permission took the right away. If the answer to all three is no, a pitched-roof array on a house is normally permitted development in England, in a conservation area as well, and the slate is a fixing question for the installer.

Related reading: solar battery vs no battery for a holiday let and the cost breakdown for a holiday cottage.

Sources: Planning Portal, solar panels mounted on a house (read 31 October 2026); the General Permitted Development Order 2015 Schedule 2 Part 14 as revised by S.I. 2026/896; Coventry City Council and Telford and Wrekin Council Article 4 records. This guide is general information, not legal advice. If you have a specific property, send an enquiry and we reply by email.