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Do I need a Building Regulations application?

Building Regulations applications are needed for most construction projects:

New buildings

  • All new buildings except agricultural buildings
  • Garages that are not fully detached and under 30 square metres

Extensions

  • All extensions no matter how small
  • Some conservatories and porches  (many are exempt but these must be separated from the house by doors and can’t be heated)
  • Roof extensions, balconies and roof terraces
  • Basements and basement extensions

In doubt? Talk to your local Building Control team

Conversions

  • All loft conversions, roof extensions, balconies and roof terraces
  • All garage conversions
  • Barn conversions
  • Subdividing a house into flats
  • Converting flats back into a house

Alterations

  • Creating a ‘granny annex’
  • Creating a new or ensuite bathroom or cloakroom
  • Installing a new kitchen
  • Taking out a loadbearing wall – you need to ask a structural engineer to confirm that your wall isn’t supporting the walls, floors or roof above it
  • Taking out a non-loadbearing wall if it separates a room from your hall, staircase or landing 
  • New installation or replacement of a heating system or any boiler, regardless of fuel type
  • New installation or replacement of an oil tank
  • Installation of a new bathroom if existing plumbing is altered or if new plumbing is installed
  • Installation of fixed air conditioning systems
  • Installation of additional radiators to some existing heating systems
  • Replacement fuse boxes, any new electrical installation connected to the fuse box and alterations to electrical installations in bathrooms around the bath or shower replacement window and door units
  • Installing roof lights
  • Making windows or doors wider or taller
  • Replacement of roof coverings on pitched and flat roofs even if this is just like for like
  • Replacing your floor

Some work can be carried out without informing Building Control if you're using a registered installer from a competent persons scheme, including the following:

  • Most repairs, replacements and maintenance work (except replacements of combustion appliances, oil tanks, electrical fuse boxes or glazing units which do need to be notified)
  • Additional power points or lighting points or any other alterations to existing circuits (except around baths and showers)
  • Like for like replacements of baths, toilets, windows, basins or sinks. 

Make a Building Control application