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Mandatory in England since February 2024

Everything you need for Biodiversity Net Gain

The single source of truth for BNG in England. Free guides, interactive tools, and expert resources for developers, landowners, lenders, and planning authorities.

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10%
Minimum net gain required
220
Registered gain sites
30 yr
Habitat management period
309
LPAs implementing BNG
Who are you?

BNG affects everyone in development

Find the guidance that matters to you. Each pathway covers your specific obligations, opportunities, and next steps.

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Understand BNG from the ground up

Plain-English guides covering every aspect of Biodiversity Net Gain, from first principles to the latest 2026 reforms.

Free tools

Make better BNG decisions

Interactive tools that answer your most pressing BNG questions in seconds. No signup required.

Decision tool

BNG Exemption Checker

Answer a few questions about your development and find out instantly whether you're exempt from BNG requirements.

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Cost calculator

Statutory Credit Estimator

Enter your unit shortfall by tier and get an instant cost estimate for statutory biodiversity credits, including the 2x spatial risk multiplier.

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Location search

Postcode Unit Lookup

Enter any postcode to find your LPA and NCA, and check whether registered gain sites with available units exist in your area.

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