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Buildings and work exempt from building control

Building regulations do not apply to the following types of building:

Small detached buildings

  • single storey buildings under 30m² floor area, containing no sleeping accommodation, constructed substantially of non-combustible material, or sited at least one metre from the boundary (e.g. detached garage)
  • nuclear shelters under 30m² floor area where the excavation for the shelter is at least the same distance from buildings as depth of the excavation plus one metre
  • any detached building with a floor area of less than 15m², with no sleeping accommodation

Extensions to domestic buildings

At ground level with a floor area of less than 30m² which is

  • conservatory or porch – specific criteria needed for exemption. You can check out the criteria on the planning portal
  • covered yard or covered way
  • car port open on at least two sides

Greenhouses and agricultural buildings

  • greenhouses are only exempt providing they are not used for retailing, packing or exhibiting
  • agricultural buildings and buildings for keeping animals are exempt if they are not used as a dwelling, are one and a half times their height in distance from any building with sleeping accommodation and have a fire exit not more than 30m from any point in a building.

If you are unsure if any building work you are planning is exempt from the building regulations please contact us for free advice

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