Extensions – London
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House Extension
Rear one storey extension
Rear Extension Lead Roof
Rear Kitchen Extension Flat Roof
Kitchen Extension Pitched Roof
One storey house extension
2 Storey Home Extension
Kitchen Extension Flat Roof
House extension flat roof terrace
Kitchen Extension 1 storey
Rear Kitchen Extension
Side two storey House Extension
Rear extension 2 storey
Side return Extension
Side Extension
Side return 2 storey Extension
Side extension Conservation area
L shaped 1 storey, side & kitchen extension
L shaped 1 storey, side & kitchen extension – Interior view , open plan floor
L shaped 2 storey extension
L shaped 2 storey house extensions
Interior – Open plan L shaped extension
Two storey side and rear extension
Two storey side and rear extension
Kitchen Extension
Interior Kitchen Extension – Open plan floor
Side rear extension
Side return extension
Rear & Side 2 storey extension
Planning Permission
This guidance reflects increases to the size limits for single-storey rear extensions which apply between 30 May 2013 and 30 May 2016, and the associated neighbour consultation scheme.
An extension or addition to your house is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:
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.
Single-storey rear extension must not extend beyond the rear wall of the original house* by more than three metres if an attached house or by four metres if a detached house.
In addition, outside Article 1(5) designated land* and Sites of Special Scientific Interest the limit is increased to 6m if an attached house and 8m if a detached house until 30 May 2016.
These increased limits (between 3m and 6m and between 4m and 8m respectively) are subject to the neighbour consultation scheme.
Maximum height of a single-storey rear extension of four metres.
Extensions of more than one storey must not extend beyond the rear wall of the original house* by more than three metres.
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.
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.
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.
On designated land* no permitted development for rear extensions of more than one storey.
On designated land no cladding of the exterior.
On designated land no side extensions.