Permitted Development

Permitted development rights mean that you can perform certain types of work without needing to apply for planning permission. Please bear in mind that the permitted development rights which apply to many common projects for houses do not apply to flats, maisonettes or other buildings. Commercial properties also have different permitted development rights to dwellings.

Permitted development rights are more restricted if you live in:

 - A conservation area.

 - A national park

 - An area of outstanding natural beauty.

 - A world heritage site or the Norfolk and Suffolk Broads.

You would need to apply for planning permission for certain types of work which do not need an application in other areas. There are also different requirements if you live in a listed building. A modification to your property is considered a permitted development subject to the following limit set out by the UK government:

  • No more than half the area of land around the "original house" would be covered by additions or other buildings.

  • No extension forward of the principal elevation or side elevation fronting a highway.

  • No extension to be higher than the highest part of the roof.

  • Maximum depth of a single-storey rear extension of three metres for an attached house and four metres for a detached house.

  • Maximum height of a single-storey rear extension of four metres.

  • Maximum depth of a rear extension of more than one storey of three metres including ground floor.

  • Side extensions to be single storey with maximum height of four metres and width no more than half that of the original house.

  • Two-storey extensions no closer than seven metres to rear boundary.

  • Roof pitch of extensions higher than one storey to match existing house.

  • Maximum eaves height of an extension within two metres of the boundary of three metres.

  • Maximum eaves and ridge height of extension no higher than existing house.

  • Materials to be similar in appearance to the existing house.

  • No verandas, balconies or raised platforms.

  • Upper-floor, side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor.