What will I need planning permission for?

29< July


Whilst most of our Timber Buildings will not require planning permission, occasionally there will be an exception. Please see below some useful information that will help you to understand any constraints that may affect you.

Outbuildings are a permitted development, not needing planning permission subject to limits and conditions.

A mini guide of these limits and conditions are as follows:

  • No outbuilding on land forward of a wall forming the principle elevation
  • Outbuildings and garages to the single story with maximum eaves height of 2.5 metres and maximum overall height of four metres with a dual pitched roof or three for any other roof.
  • Maximum height of 2.5 metres in the case of a building, enclosure or container within two metres of a boundary of the curtilage of the dwelling/house.
  • 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 the 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.
  • Within the curtilage of listed buildings, any outbuildings will require planning permission.


*The term ‘original house’ means the house as it was first built or as it stood on 1st 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.

If you want to put up small-detached buildings such as a garden shed or summerhouse in your garden, BUILDING REGULATIONS will not normally apply if the floor area of the building is less than 15 square metres and contains NO sleeping accommodation.

If the floor area of the building is between 15 square metres and 30 square metres, you will not normally be required to apply for building regulations approval providing that the building contains NO sleeping accommodation and is either at least one metre from any boundary or it is constructed of substantially non-combustible materials.

If your building does require PLANNING PERMISSION, we can put you in touch with someone to help with the finer details. Please note though that Phoenix Timber Buildings are not responsible for decisions made on planning.

If you need any help or advice on planning permission and/or if you will need to apply for it, then please call our friendly Farnham show site team on 01252 712 227 with any questions you may have.