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Permitted Development for Outbuildings

Permitted Development for Outbuildings

Under permitted development some outbuildings can be built without the need for planning permission. However in many cases consent is required from the local authority.

We have put together a bullet point list which is good as a reference point but also useful to present to clients who will no doubt at first be flooded with all the criteria for permitted development.

This criteria is relevant to each individuals property and this handy list can be used when assessing the clients property. Further more there is a useful interactive map on the governments planning portal which covers all planning aspect for domestic housing improvements.

Again this tool is geared towards the client and makes the information easier to understand as it is accompanied with visual guidance as well as written descriptions. Those of you that have tried to explain these criteria to clients will understand benefits of having information which is easy for the client to take away and follow.

Criteria for Permitted Development of Outbuildings

Outbuildings considered to be permitted development (not needing planning permission) are subject to all the following conditions:

  • Must be single storey with a maximum eaves height of 2.5 meters and maximum overall height of 4 meters if it has a dual pitched roof.
  • Not within 2 meters of the property boundary (unless under 2.5 meters in height)
  • Balconies and verandas are not permitted development. Raised platforms such as decking are permitted development provided they are no higher than 300mm
  • Outbuildings and other additions must not exceed 50% of the total area of land around the original house*. (all other outbuildings and extensions to the original house must be included when calculating this 50% limit)
  • No outbuilding on land forward of a wall forming the principal elevation of the original house.
  • On designated land** outbuildings to the side of the house are not permitted development.
  • If the outbuilding is to be built in national parks, the Broads, Areas of Outstanding Natural Beauty and World Heritage Sites or within the grounds of a listed building.
  • To be permitted development, any new building must not itself be a separate self-contained living accommodation.

*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 national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites.

Note: This is an introductory guide and is not a definitive source of legal information. We recommend that checks are made with your local authority to confirm your position.

About the Author: This information was provided by The Classic Barn Company who provide a range of Oak framed garages and barns. You can find them on SpecifiedBy or connect with them on Twitter, Facebook and Linkedin.


SpecifiedBy Editor