It is the first question at nearly every first visit, and the answer is more often no than people expect.
What permitted development allows
Most houses may be extended at the back by three metres (four if detached) and have the loft converted without a planning application, so long as the work stays under set heights and uses matching materials.
When you do need to apply
Flats, listed buildings and houses in a conservation area need permission for almost everything. So does any extension at the front, anything over half the garden, and any dormer that faces the road.
How to be sure
Ask the council for a lawful development certificate. It costs about half an application fee, takes eight weeks and proves to a future buyer that the work was allowed. We apply for one on every project.
Building regulations are a separate matter. Every extension needs them, permission or not.
What it costs to find out
Nothing. We check your house against the rules at the first visit and tell you in writing which route applies.
