Frequently Asked Questions- Building Control Guidance

If you are not sure whether you need to make a Building Control application, please ask. The Building Regulations exist to ensure the health, safety and well being of individuals, in and around buildings. They also provide for reduction in carbon emissions in line with Government targets for buildings. The following are an example of some of the frequently asked questions.

  • Do I need to make a Building Control application for a roof space conversion?
    Yes. A roof space is generally a structural alteration and can be one of the most complex alterations. You should seek advice from a competent professional before undertaking work on your roof space.
  • Do I need to make a Building Control application to build an extension to my house?
    Yes, although a porch at ground level, not exceeding 30m2 in area, which protects an external access door to a building is exempt, but the glazing must comply with BS6206.
  • Do I need to make a Building Control application to build or alter a garden or boundary wall or to build a retaining wall?
    No, but planning approval may be required. The construction of all walls should be undertaken with care and may require to be designed by an engineer.
  • Do I need to make a Building Control application to install a WC under the stairs?
    Yes.
  • Do I need to make a Building Control application to remove internal walls, remove the chimney breast or make internal structural alterations?
    Yes, alterations of a structural nature require Building Control approval. Generally the installation of a beam or lintel is required. The advice of a Structural Engineer may be necessary. If in doubt, ask.
  • Do I need to make a Building Control application to convert an attached garage into a room?
    Yes, consideration of damp proofing, ventilation, means of escape and fire detection are some of the things that will need to be considered. Professional advice should be sought.
  • Do I need to make a Building Control application for a conservatory or porch?
    No, providing it is an extension to a building, is at ground level, and has a floor area not exceeding 30m2. Conservatories must have at least 75% of the roof and 50% of the external wall made of translucent material, with physical separation between the dwelling and the conservatory. Glazing must conform to Building Regulations. Any heating must be controlled. However, if a new opening to the existing structure is required for access to the conservatory, an application is required for that part of the work.
  • Do I need to make a Building Control application to install replacement windows?
    Yes, the replacement of windows is classed as building work. However if your installer is registered with an approved body, such as FENSA, a formal application would not be necessary. Please ensure on completion you obtain the relevant installation certificate should you use a FENSA registered company.
  • Do I need to make a Building Control application to carry out repairs to my house?
    No, providing the repairs are of a minor nature and you are replacing like with like. Consult your local Building Control Office for further information.
  • Do I need to make a Building Control application to insert cavity wall insulation into an existing wall?
    Yes.
  • Do I need to make a Building Control application to install a heating appliance?
    Yes, unless it is installed by a;GasSafe registered installer.
  • Do I need to make a Building Control application to install a new roof window?
    Yes.
  • Do I need to make a Building Control application to build a detached garage?
    No, provided it does not exceed 30m2 in floor area and is either built substantially of non-combustible material or is not less than one metre from a dwelling or boundary of the site or a road.
  • Do I need to make a Building Control application to build an attached garage?
    Yes, but a carport, open on at least two sides, or a covered way or similar structure at ground level is exempt, provided it does not exceed 30m2 in area.