We are running a short series of blogs on Permitted Development Rights, in relation to dwellings. This outlines works that you can carry out on your home, without the need for formal Planning Submission and Approval. Here we are detailing Class A permitted Development Rights for SINGLE STOREY EXTENSIONS.

Class A permitted Development Rights – The enlargement, improvement or other alteration of a dwelling house – SINGLE STOREY EXTENSIONS

An extension or addition to your house is considered to be permitted development, not requiring an application for planning permission, provided certain limits and conditions are met.

Firstly, check you are not on designated land. This includes national parks, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites. PD Rights will/amy be reduced in these areas and further advice should be taken. Listed Buildings do not benefit from Class A PD Rights.

The following conditions must be met to comply with Class A PD Rights –

1| No more than half the area of land around the “original house” would be covered by additions or other buildings. Sheds and other outbuildings must be included when calculating the 50 per cent limit

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

3| Materials used in exterior work to be similar in appearance to those of the exterior of the existing house (except conservatories)

4| Side extensions to be single storey. The width of side extension must not have a width greater than half the width of the original house.

5| Side extensions to have a maximum height of 4m and width no more than half that of the original house.

6| If the extension is within 2m of a boundary, maximum eaves (gutter) height should be no higher than 3m to be permitted development.

7| 9) Single-storey rear extensions must not extend beyond the rear wall of the original house by more than 4m if a detached house; or more than 3m for any other house. Where not on designated land* or a Site of Special Scientific Interest, this limit is increased to 8m if detached house; or 6m for any other house.

8| Maximum height of a single-storey rear extension of 4m.

Please get in touch if you are interested in building a single storey extension on your home, we would be delighted to discuss ideas with you.