Planning Permissions
Planning permission is not normally required to convert the loft space in your house to an extra room. However, permission is required where you extend the roof and it contravenes certain rules.
You need to apply for planning permission when:
- You intend to extend the roof and your house lies within a Conservation Area, a National Park, an Area of Outstanding Natural Beauty or the Broads
- The work would make some part of the house higher than the highest part of the existing roof
- The dormer or other addition you want to build would extend beyond the plane of any existing roof slope facing the highway
- A roof extension would add more than 40 cubic metres to the volume of a terraced house or more than 50 cubic metres to any other kind of house
Additional volume created by an extension – including roof extensions - will count against the total volume limit for your house. For example, if you have already extended your house – and that includes conservatories - you may have already used up your volume extension limits.
Visit www.planningportal.gov.uk for more information.