Permitted Development Rights Checker
Permitted development (PD) rights allow you to carry out certain home improvements without planning permission. Use our step-by-step checker to find out whether your project needs permission.
What is Permitted Development?
Permitted development rights are granted by the General Permitted Development Order (GPDO) 2015 and allow homeowners to make certain improvements without applying for planning permission. The rights depend on your property type, location, and the size of the proposed works. If you live in a conservation area, AONB, national park, or a listed building, stricter rules apply.
Permitted Development Checker
Find out if your project needs planning permission
What type of property is it?
Why Get a Certificate?
Even if your project is PD, getting a Certificate of Lawful Development (£129) provides legal certainty and protects you when you sell your property.
How to apply for a CLD →Common Permitted Development Classes
Class A — Extensions
Single and double-storey rear and side extensions, subject to size limits (3m or 4m depth for attached, 4m or 6m for detached).
Class B — Roof Additions
Loft conversions and dormer windows, subject to volume limits (40m³ terraced, 50m³ detached/semi).
Class C — Roof Alterations
Roof changes including replacement of roofing materials and installation of roof lights (Velux windows).
Class D — Porches
Front porches up to 3m² in area and no more than 3m above ground level.
Class E — Outbuildings
Sheds, garages, home offices, and other outbuildings in the rear garden, subject to coverage and height limits.
Class F — Hard Surfaces
Driveways and hard standing areas. Permeable surfaces are usually PD; impermeable surfaces over 5m² at the front require planning permission.
These are the main PD classes from Schedule 2, Part 1 of the GPDO 2015 (England). Rules differ in Wales, Scotland, and Northern Ireland. Always check current legislation or seek professional advice for complex cases.