This is general guidance based on standard permitted development rights in England. Rules differ for listed buildings, conservation areas, and properties with Article 4 directions. Always confirm with your local planning authority before starting work.
Do I Need Planning Permission for a Solar Panels?
Installing solar photovoltaic (PV) panels or solar thermal panels on your roof or within your property's grounds. Solar panels have specific permitted development rights under Part 14 of the GPDO.
The General Position
This project is usually allowed under permitted development rights without needing to apply for planning permission, provided certain conditions and limits are met.
Generally permitted under Part 14, Class A (roof-mounted) of the GPDO. Solar panels on a roof are PD provided they do not protrude more than 200mm beyond the roof plane and do not exceed the highest part of the roof (excluding the chimney). Standalone panels in the garden are PD under Part 14, Class B with additional conditions.
Conditions and Requirements
- 1Must not protrude more than 200mm beyond the roof plane
- 2Must not be higher than the highest part of the roof (excluding the chimney)
- 3Must not be installed on a wall or roof slope forming the principal elevation and fronting a highway (in designated areas)
- 4Panels must be removed when no longer needed for energy generation
- 5Standalone ground-mounted panels: must not face a highway and must not exceed 4m in height or 9 square metres in area
Size and Dimension Limits
- Roof-mounted: must not protrude more than 200mm from roof plane
- Must not exceed highest part of roof (excluding chimney)
- Ground-mounted: maximum 4m height, 9 square metres area
When Permitted Development Does Not Apply
- Listed buildings require listed building consent
- In conservation areas, AONB, National Parks, etc., panels on principal or highway-facing elevations are not PD
- Standalone panels must not be within 5m of the boundary of the curtilage in designated areas
- Flat roof installations must not exceed 1m above the highest point of the flat roof
What About Building Regulations?
Building Regulations do not normally apply to solar panel installation on an existing roof, provided the roof structure can support the additional load. If structural alterations to the roof are needed, Building Regulations may apply. Electrical work must comply with Part P and should be carried out by an MCS-certified installer to qualify for Smart Export Guarantee (SEG) payments.
Building regulations are separate from planning permission. You may need both, one, or neither depending on your project. Building regulations cover the safety and quality of building work, including structural integrity, fire safety, insulation, ventilation, and drainage.
How to Apply for Planning Permission
Check if you need permission
Review the permitted development rules above. If in doubt, contact your council or apply for a Lawful Development Certificate.
Prepare your application
You will need scaled drawings, a site plan, and a completed application form. An architect or planning consultant can help with this.
Submit to your local council
Applications can be submitted online via the Planning Portal or directly to your council. Select your council below for a direct link.
Wait for a decision
8 weeks for householder planning applications if PP is needed..
Application cost: £258.
What Happens If I Build Without Permission?
Low risk for standard roof-mounted panels on non-listed, non-designated-area properties. In conservation areas or on listed buildings, enforcement can require removal of panels installed without consent.
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Select Your Council
Choose your local council for guidance specific to your area, including links to apply and whether your council has conservation areas or Article 4 directions that could affect your project.
London
South East
South West
East of England
East Midlands
West Midlands
North East
North West
Yorkshire and the Humber
CA = has conservation areas. A4 = has Article 4 directions. These may restrict your permitted development rights.