Check if you need building regulations approval before you start any building work - your builder will usually do this for you but as the owner of a building you may be held responsible.

You usually need building regulations approval if you:

  • put up a new building
  • extend or alter an existing building
  • install services or fittings in a building, eg washing and sanitary facilities, hot water cylinders, foul water and rainwater drainage, replacement windows and any fuel burning appliances

Building regulations approval is separate from planning permission - you may need to get both.

Apply for building regulations approval through your local council or a private approved inspector.

Sometimes your installer (eg of windows or boilers) can self-certify the work if they’re registered with a competent person scheme. This means you don’t need to apply for approval yourself. Check with your installer and read about what type of work can be self-certified.

You must follow the safety and energy efficiency rules even if you don’t need to get formal approval.

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