Do I need planning permission for commercial solar panels?

Most UK commercial solar installations don’t require planning permission. The Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2 Part 14 Class A, gives commercial property owners “permitted development” rights to install rooftop solar PV without a formal planning application — provided certain conditions are met. The same applies in Wales under similar GPDO regulations. Scotland has separate but broadly equivalent rules. The major exceptions: listed buildings, properties in conservation areas (especially front-facing roofs), scheduled monuments, World Heritage Sites, ground-mounted arrays above 9 m², and any roof installation that protrudes more than 200 mm above the existing roof plane.

What Permitted Development covers

Class A Part 14 GPDO 2015 (England) allows you to install solar PV on a commercial building without planning permission if:

1. The panels do not protrude more than 200 mm above the roof plane (clip-fix to standing-seam metal: tick. Tilted frames on flat roofs: only if they fit within the height envelope)
2. The panels do not extend above the highest part of the roof (excluding chimneys)
3. The building is not in a conservation area or, if it is, the panels are not on a front-facing roof
4. The building is not listed
5. The building is not a scheduled monument
6. The total area of ground-mounted solar (if any) does not exceed 9 m²

If all six conditions are met, you can install without a planning application. You should still notify the local planning authority of the install and document compliance — if challenged later, you’ll need evidence.

When planning permission IS required

Situation	Why
Listed building	Always requires Listed Building Consent + planning
Conservation area, front-facing roof	Requires planning permission
Scheduled monument	Always requires Scheduled Monument Consent
Ground-mounted >9 m²	Requires full planning application
Tilt frames raising panels >200 mm	Outside PD; needs planning
Panels visible above roof ridge	Outside PD; needs planning
Article 4 Direction in force	PD removed; needs planning

Article 4 Directions are local restrictions sometimes applied by councils to specific streets or areas, removing PD rights. Check with your council before assuming PD applies — they’re more common than you’d expect, especially in market towns.

What to do before installing

1. Check the planning portal: search for the property at planningportal.co.uk/check-permission. Confirms PD status.
2. Check listing status: search at historicengland.org.uk/listing.
3. Check conservation area: usually mapped on your local council’s website.
4. Check Article 4 Directions: ask your local planning department directly — these are not always well-published.
5. Get a Lawful Development Certificate (optional but recommended): a council-issued certificate confirming PD applies. Costs £103 in 2026. Provides legal certainty. Useful when selling the building.

Worked examples

Case 1: Light-industrial unit on a 1990s estate. Standing-seam metal roof, no listing, not in conservation area. Install fits flush with roof. Article 4 not in force. Permitted Development applies. No planning application needed.

Case 2: Office in a converted Victorian warehouse, conservation area. Building is unlisted but in a conservation area. Front-facing roof: planning permission required. Rear-facing roof: Permitted Development applies. Solution: install only on rear roof, no application needed.

Case 3: Grade II listed pub planning solar on outbuilding. The outbuilding is curtilage-listed (i.e. listed by association with the main building). Listed Building Consent required for both. Lengthy process; success depends on conservation officer.

Case 4: Industrial unit, 75 kW system, but installer wants to use a 30° tilt frame. The tilt would raise panels 600 mm above roof plane, breaching the 200 mm rule. Outside PD. Planning permission required, OR change to a flush-mount approach.

Common misconceptions about commercial solar planning

“Commercial solar always needs planning” — wrong. Most don’t.

“My neighbour got planning so I’ll need it too” — wrong. Each property’s planning status depends on listing, conservation area, Article 4, and roof orientation, not on neighbour decisions.

“You can install first and ask later” — risky. Planning enforcement can require removal of non-compliant systems. Removal costs are 60-80% of original install cost — far more than checking PD upfront.

“Permitted Development is the same across the UK” — no. England, Wales, Scotland, and Northern Ireland each have their own GPDO. Scottish PD rules differ on threshold heights.

Next steps

For a planning-aware feasibility study covering your specific property, contact us. See our grants and funding page and cost guide. Related: planning permission detail, listed buildings, building regulations.