15/10/2026
Thinking about an extension or loft conversion?
Most houses in England can carry out certain works under permitted development without a full planning application. The limits cover depth, height, materials and earlier extensions. They do not cover flats or listed buildings, and they can be removed in conservation areas or by Article 4 directions.
A lawful development certificate gives formal confirmation from the council. Landmark Group will check the position against your house before any drawings are produced.
Comment with the town. We will tell you what usually binds the application.