Rules governing outbuildings apply to sheds, and garages as well as other ancillary garden buildings and many other kinds of structure for a purpose incidental to the enjoyment of the dwelling house.

Under new regulations that came into effect on 1 October 2008, outbuildings are considered to be permitted development, not needing planning permission, subject to the following limits and conditions:

• No outbuilding on land forward of a wall forming the principal elevation.
• Outbuildings and garages to be single storey with maximum eaves height of 2.5
metres and maximum overall height of four metres with a dual pitched roof or
three metres for any other roof.

• Maximum height 2.5 metres within two metres of a boundary.

  • No outbuilding on land forward of a wall forming the principal elevation.
  • Outbuildings and garages to be single storey with maximum eaves height of 2.5 metres and maximum overall height of four metres with a dual pitched roof or three metres for any other roof.
  • Maximum height 2.5 metres within two metres of a boundary.
  • No verandas, balconies or raised platforms.
  • No more than half the area of land around the “original house”* would be covered by additions or other buildings.
  • In National Parks, the Broads, Areas of Outstanding Natural Beauty and World Heritage Sites the maximum area to be covered by buildings, enclosures, containers and pools more than 20 metres from house to be limited to 10 square metres.
  • On designated land** buildings, enclosures, containers and pools at the side of properties will require planning permission.

*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.

Disclaimer: this is an introductory guide and is not a definitive source of legal information.

NOTE: This guidance relates to the planning regime for England. Policy in Wales may differ. If in doubt contact your Local Planning Authority.

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