Similarly, you may ask, what is the maximum extension without planning permission?
Under the new rules you can extend to eight metres for detached homes or six for all other types of homes. For extensions that are over four metres you will need to give notification to your neighbours and with objections you may not be able to build an extension this large.
Furthermore, do I need planning permission to extend the back of my house? Anything more than three metres and you would require planning permission for the extension. The maximum eaves and ridge height of your extension must be no higher than the existing house. If it is closer than seven meters to the rear boundary, then you would need planning permission for the extension.
In this way, how far can I extend the rear of my house without planning permission?
Rear extensions tend to have the least amount of red-tape associated with them, and in most instances you should be able to build a single storey extension of up to four metres for a detached house, or three metres for all other types of house, likely without needing planning permission or prior approval.
Do you need planning permission for 2021 extension?
The short answer is that you DON'T need planning permission for an extension if you build within your permitted development rights. Most of the restrictions that don't fall under permitted development are for work to the front of a house, next to a road or near a boundary.
