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Planning Permission & Building Regulations for small detached buildings
The following points cover the main restrictions local planning authorities and building control departments place on such additions to your property. Please note that it is always advisable to check with your local planning authority and building control office for a definitive guide:
Planning
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:
- The building is not forward of the principal elevation. In most instances this means that it is not built in the front garden.
- The building must be single storey with a maximum eaves height of 2.5m and a maximum overall height of 4m with a dual pitched roof or 3m for any other roof (eg flat).
- The height of the building should not be more than 2.5m within 2m of a boundary.
- The building does not include verandas, balconies or raised platforms.
- The area occupied by the building is less than 50% of the land area around your main house.
- You do not live in a conservation area or listed property.
- Covenants do not exist that restrict the building of a cabin (or
similar) on your property.
Building Control & Building Regulations
In the UK if you want to put up small detached buildings in your garden, building regulations will not normally apply if the floor area of the building is less than 15 square metres.
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 is either at least one metre from any boundary or it is constructed of substantially non-combustible materials.
In both cases, building regulations do not apply ONLY if the building does not contain any sleeping accommodation.
Please note that in ALL cases any electrical installation must meet the requirements of Part P regulations.
