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Check the development class

Major development involves one or more of the following:

  • providing 10 or more dwellings or, where the number of dwellings is not known, the site area is 0.5 hectares or more
  • providing a building or buildings where the floor space to be created by the development will be 1,000 square metres or more
  • development on a site of 1 hectare or more
  • the winning and working of minerals or the use of land for mineral-working deposits
  • waste development


A minor development is:

  • development of an existing dwelling, or development within the curtilage of a dwelling, for any purpose incidental to the enjoyment of the dwelling
  • an extension to an existing building used for non-domestic purposes where the floor space created by the development does not exceed 250 square metres
  • alterations to an existing building which do not increase the size of the building


Non-major development is any development not falling into the major or minor development classes.

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    The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Department for Levelling Up, Housing & Communities. All content © 2022 Planning Portal.