Most loft conversions fall under what is known as Permitted Development. Whilst most extensions do too, anything outside of the guidelines will need full Planning Permission.

In all cases Building Regulations are required.

The following offer a visual explanation of planning requirements:

  • Planning Portal Loft Conversion miniguide

  • Planning Portal Extensions miniguide

  • Consideration should also be given to the Party Wall Act 1996 in relation to neighbouring boundaries and shared walls.