Loft Conversion Permission
and Regulations

Planning permission is not normally required. However, permission is required where you extend or alter the roof space and it exceeds specified limits and conditions. Under new regulations that came into effect from 1 October 2008 a loft conversion for your home is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

  • A volume allowance of 50 cubic metres for detached and semi-detached houses.
  • No extension beyond the plane of the existing roof slope of the principal elevation that fronts the highway.
  • No extension to be higher than the highest part of the roof.
  • Materials to be similar in appearance to the existing house.
  • No verandas, balconies or raised platforms.
  • Side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor.
  • Roof extensions not to be permitted development in designated areas (include national parks, the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites).
  • Roof extensions, apart from hip to gable ones, to be set back, as far as practicable, at least 20cm from the eaves.
  • Reference: Loft conversion planning permission


Building Regulations

Inspections are made by the Council or an authorised building control company. We tend to recommend the private option as we find we get you a better service. The company we are presently using is Assure Building Control approx. price for inspections is £525

Building regulations exist to ensure the health and safety of people in and around all types of buildings, provide for energy conservation, and access to and use of buildings. It is important that we comply to building regulations and that you understand them.
PDF documents | Approval Process

Party Wall Act

Anyone intending to carry out work on or near a party wall must give the adjoining owners written notice of their intentions. Adjoining owners can agree or disagree with what is proposed and where there is a disagreement the Act provides for resolution of disputes.
Party Wall Act Explained PDF


The Guild of Master Craftsmen crest and certificate




Directgov Planning Portal website linkAssure Building Control logo and link