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Biodiversity Net Gain

Who does biodiversity net gain affect?

Biodiversity net gain is expected to affect all planning applications, except those which are specifically exempt. The exempt list includes: 

  • Permitted Development 
  • Householder applications 
  • Urgent crown development 
  • Developments impacting habitat of an area below the threshold of 25 metres squared, or 5 metres for linear habitats such as hedgerows
    • Note: a habitat is 'impacted' where the habitat is lost or degraded causing a decrease in the biodiversity value of that habitat
  • Biodiversity gain sites 
  • Small scale self-build and custom housebuilding. 

Biodiversity net gain regulations was initially implemented in February 2024, apart from small sites whose transition period was until 2 April 2024. A small site is defined as: 

For residential: between 1-9 dwellings on a site having an area less than one hectare 

Or 

Where the number of dwellings to be provided is not known, a site area of less than 0.5 hectares  

For non-residential: where the floor space to be created is less than 1,000 square metres  

And

Where the site area is less than one hectare 

    The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Department for Levelling Up, Housing and Communities (DLUHC). All content © 2024 Planning Portal.

    The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Department for Levelling Up, Housing and Communities (DLUHC). All content © 2024 Planning Portal.