Glossary

    BNG (Biodiversity Net Gain)

    UK requirement to leave biodiversity 10% better post-development.

    Definition

    Mandatory under the Environment Act 2021 for most planning permissions in England. Developers must demonstrate a 10% uplift in biodiversity units using the statutory metric, secured for at least 30 years, on-site, off-site, or via statutory credits.

    Related terms

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