Search the biodiversity gain sites register
Get information about biodiversity gain sites and any off-site gains allocated to developments.
Applies to England
This page applies to:
-
developments that need planning permission
-
nationally significant infrastructure projects (NSIPs), from 2 November 2026
You will be able to search the register to check details about registered biodiversity gain sites, including the:
- location
- map or plan showing the boundary of the gain site
- types of habitats to be enhanced or created
- habitats on a site that are allocated to a development
- relevant local planning authority or responsible body
The register will be populated with data supplied by applicants with their application. Once applications have been accepted, the relevant information will appear on the biodiversity gain sites register.
Updates to this page
-
Updated page to show it also applies to nationally significant infrastructure projects (NSIPs). Biodiversity net gain will be mandatory for NSIPs from 2 November 2026.
-
Removed the call to action panel following the addition of the first gain site to the biodiversity gain sites register.
-
Updated with a link to the biodiversity gain sites register.
-
First published.