You do not usually need to apply for planning permission for:
- repairs, maintenance, and minor improvements, such as repainting window and door frames
- new windows and doors that are of a similar appearance to those already in the house
- internal secondary glazing
If you live in a conservation area, a listed building or in a property where an article 4 direction is in place, you may still need planning permission for these works.
To be permitted development, new windows for an upper floor must be:
- obscure glass
- non-opening
- or more than 1.7m above the floor