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Home Extensions

Home Extensions

Here are the rules for Permitted Development for Home Extensions

From 31st May 2013 the government has reviewed the planning rules in respect of home extensions in order to facilitate faster building programmes. If your property and proposed project meets a certain criteria then you do not have to apply for planning permission in the normal way. This is called ‘permitted develop- ment’ and this is the criteria that you must meet to qualify.

YOUR PROJECT MUST FALL WITHIN THIS SET OF RULES FOR PERMITTED DEVELOPMENT

This guidance reflects temporary increases to the size limits for single-storey rear extensions that must be completed by 30th May 2019, and the associated neighbour consultation scheme.
An extension or addition to your house is considered to be permitted development, not requiring an appli- cation 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 2(3) 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 2019.
  • These increased limits (between 3m and 6m and between 4m and 8m respectively) are subject to the prior notification of the proposal to the Local Planning Authority and the implementation of a neighbour consultation scheme. If objections are received, the proposal might not be allowed.
  • 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.
  • * The term "original house" means the house as it was first built or as it stood on 1 July 1948 (if it was built before that date). Although you may not have built an extension to the house, a previous owner may have done so.
  • * Designated land includes conservation areas, national parks and the Broads, Areas of Out- standing Natural Beauty, and World Heritage Sites.
  • You must comply with the NEIGHBOUR CONSULTATION SCHEME

Neighbour consultation scheme

1. A homeowner wishing to build a larger single-storey rear extension must notify the local planning authority and provide:
A. A written description of the proposal which includes the length that the extension extends beyond the rear wall of the original house, the height at the eaves and the height at the highest point of the extension; B. A plan of the site, showing the proposed development
C. The addresses of any adjoining properties, including at the rear d. a contact address for the developer and an email address if the developer is happy to receive correspondence by email. There is no fee in connection with this process.

2. The local authority may ask for further information if it needs it to make a decision about the impact of the development on the amenity of adjoining properties.

3. The local authority will serve a notice on adjoining owners or occupiers, i.e. those who share a boundary, including to the rear. This will give the address of the proposed development and describe it, including the information in 1(a) above. It will also set out: a. when the application was received, and when the 42-day determination period ends b. how long neighbours have to make objections (which must be a minimum of 21 days), and the date by which these must be received A copy of this notice must also be sent to the developer.

4. If any adjoining neighbour raises an objection within the 21-day period, the local authority will take this into account and make a decision about whether the impact on the amenity of all adjoining properties is acceptable. No other issues will be considered.

5. The development can go ahead if the local authority notifies the developer in writing either: a. that as no objections were received from adjoining neighbours it has not been necessary to consider the impact on amenity, or b. that following consideration, it has decided that the effect on the amenity of adjoining properties is acceptable.

6. If the local authority does not notify the developer of its decision within the 42-day determination period, the development may go ahead.

7. If approval is refused, the developer may appeal.

8. The extension must be built in accordance with the details approved by the local authority (or, if no objections were raised or the local authority has not notified the developer of its decision, the details submitted), unless the local authority agrees any changes in writing.

9. The development must accord with all other relevant limitations and conditions which apply to other rear extensions allowed under permitted development. These are set out in Class A, and include for example, the requirement that the extension (apart from a conservatory) must be constructed using materials of a similar appearance to those used in the construction of the rest of the house.

10. To benefit from these permitted development rights, the extension must be completed on or before 30 May 2019. The developer must notify the local authority in writing of the date of completion.

 





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