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Permitted Development

PremPlan - DIY developementWhat Is Permitted Development?

Permitted Development Consultants

Under new regulations that came into effect on 1 October 2008 an extension or addition to your home is considered to be permitted development.

This means that you are not required to sumbit an application for planning subject to the terms and conditions.

New regulations details

  • 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 3.0m for an attached house and 4.0m for a detached house.
  • Maximum height of a single-storey rear extension of 4.0m.
  • Maximum depth of a rear extension of more than one storey of 3.0m including ground floor.
  • Side extensions to be single storey with maximum height of 4.0m 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.
  • 3.0m maximum eaves height of an extension within 2.0m of the boundary.
  • 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.
  • 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 national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites.

Planning Drawing Costs

Side extensions must conform to the regulations stated above to gain permitted develolpment.

Permitted Development Legislation

Any work which is deemed to be development will require planning permission. Although Article 3 of the General Permitted Development Order 1995 states that some development is permitted without the need of a formal planning application.

Schedule 2 of the General Permitted Development Order (Generally know as Permitted Development) states what is specifically included.

For more information about permitted development in your area you should contact your local planning authority.

Planning Drawing Costs

Current changes to planning and any relevant documents can be found on the government planning portal.

Some minor changes can be made to your house without having to apply for planning permission. These are known as "permitted development rights" which are granted by Parliament instead of your local authority. These are generally restricted to houses and not flats, maisonettes or other buildings (e.g. barns)

There are some areas of the country and properties where permitted developments rights are more restricted and sometimes except.

These include:

  • Listed Buildings
  • Conservation Areas
  • National Parks
  • Areas of Outstanding Natural Beauty
  • Norfolk Broads
  • Suffolk Broads

If your property falls into one of these categories you will often need to apply for planning for changes which you would not in other areas.

Removal of Permitted Development Rights

It should be known that the local planning authority are able to withdraw some of your permitted development rights through issuing an "Article 4 Direction." This is most common in conservation areas and if this applies to your area you will be required to submit a planning application. For further information contact your local planning authority.

Relevant Permitted Development Links

Planning information

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