Do I Need Planning Permission for a Dormer?

Many rear dormer extensions can be built under permitted development rights, meaning you do not need a full planning application. However, the dormer must comply with size, height and position limits, and it must not extend beyond the existing roof plane by more than specified distances. Two-storey extensions and front dormers usually require planning permission. If your home is in a conservation area, is listed or is subject to an Article 4 direction, permitted development rights may be removed and full planning permission will be needed. Building regulations approval is almost always required for a dormer, as the work involves structural alterations, insulation and fire safety. We advise homeowners in Greater Manchester to check their property status before committing to a dormer and can help with planning and building regulation submissions.