What regulations need to complied with for a dormer loft conversion?

You can add a dormer loft conversion to the rear of your property under Permitted Development rules, subject to various limits. Outside those limits, you will require planning permission.

For your loft conversion to qualify as a habitable room it needs to conform to building regulations. These regulations cover the structural element of your conversion, including:

  • floor joist size
  • head height
  • configuration of the stairs leading to it
  • fire protection/means of escape
  • any changes to the roof structure.