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BNG explained from first principles

Plain-English guides covering every aspect of Biodiversity Net Gain in England, from the basics to the latest 2026 reforms.

The 10% requirement, who it applies to, and why it exists

How habitat value is calculated using DEFRA Metric 4.0

On-site, off-site, and statutory credits: the three delivery routes

Conservation covenants vs S106: which to use and when

Habitat matching, distinctiveness tiers, and geographic rules

Current thresholds and the upcoming 0.2ha exemption

Last resort pricing from £42k per credit, the 2x SRM explained

BNG for Nationally Significant Infrastructure from May 2026

What the register contains, how to search it, and how to register

Everything changing this year: exemptions, NSIPs, LNRS, NPPF