Get Approval Larger Home Extension

You can add a home extension or conservatory up to six metres, or eight metres if your home is detached, without needing to apply for planning permission.

You'll probably need planning permission if you want to: build something new. make a major change to your building, such as building an extension. change the use of your building.

You DO need planning permission for an extension if: The eaves height is more than 3 metres, if within 2 metres of the boundary.

Detached House Extension Rules 2023 Under permitted development for a detached house, you can extend up to 4m under permitted development, and up to 8m under the larger home extensions scheme / prior approval.

If your house is more than one storey, then if you extend, you cannot go past the back wall of the house by over three metres. The maximum height of the extension's eaves needs to be three metres if you are within two metres of the boundary. The ridge and eaves height cannot be taller than the existing property.

The 'prior approval' process only applies to larger single-storey rear extensions. This is defined as extending beyond the rear wall of the original house* by: over four and up to eight metres for detached houses; and. over three and up to six metres for all other houses.

You'll probably need planning permission if you want to: build something new. make a major change to your building, such as building an extension. change the use of your building.

ing to the law, homeowners can add extensions to their homes without applying for planning permission when they use their permitted development rights, as long as the extension follows the stipulated requirements.