We cannot answer specific questions on whether or not your proposed Garden Building will require permission. Only your local authority can do this. The following information is just a general guideline but should prove helpful.
Generally, you will not need planning permission for:
- Building an extension to the rear of the house which does not increase the original floor area of the house by more than 40 square meters and is not higher than the house.
- The extension should not reduce the open space at the back of the house to less than 25 square meters which must be reserved exclusively for the use of the occupants of your house.
- If your house has been extended before, the floor area of the extension you are now proposing and the floor area of any previous extension (including those for which you previously got planning permission) must not exceed 40 square meters. (There are also other height restrictions.)
- Buildings at the back or side of a house so long as it does not extend out in front of the building line of the house and does not exceed 4 meters in height (if it has a tiled/slated pitched roof) or 3 meters (if it has any other roof type). This building will be exempt from planning permission once the floor area is limited to 25 square meters.
These are guidelines only; it is most important to check with your local authority.
