Installing a fuel tank is considered to be permitted development, not needing planning permission, subject to the following limits and conditions:

  • Not more than 3,500 litres capacity.
  • The container cannot extend beyond a wall comprised in the principal elevation of the original dwellinghouse. Guidance on what constitutes the principal elevation is contained within the householder guide.
  • The container cannot extend beyond the side elevation of the house when the development would be any closer to a highway than the existing house, or at least 5 metres from the highway – whichever is nearest.

Please note: the permitted development allowances described here apply to houses not flats, maisonettes or other buildings. View guidance on flats and maisonettes here.

*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.

Householder guide

The Welsh Government has produced a technical guide, and a householder guide, available here, to help you understand how permitted development rules might apply to your circumstances.

Removal of permitted development rights

You need to be aware of whether the permitted development rights have been removed from your property by the Local Planning Authority. If they have been removed, you must submit a planning application for the work.

The Local Planning Authority may have removed some of your permitted development rights as a condition of the original planning permission for your property. This information will be available on the planning register held by the Local Planning Authority. Permitted development rights may also have been removed by an 'Article 4' direction. These are most common in conservation areas where the character of an area could be threatened by unmanaged development. Your solicitor should have informed you of whether an article 4 direction exists when you purchased your property, but you can check with the Local Planning Authority if you are not sure.