Biodiversity Net Gain (BNG) — UK Guide
What is Biodiversity Net Gain?
Biodiversity Net Gain (BNG) is a legal requirement for most developments in England, mandating that developments deliver a minimum 10% net gain in biodiversity value compared to pre-development baseline conditions.
BNG Requirements and Process
Baseline Assessment
Detailed habitat survey to establish existing biodiversity value using the statutory BNG metric.
BNG Metric Calculation
Use the statutory biodiversity metric to calculate pre and post-development biodiversity units.
Mitigation Hierarchy
Follow the mitigation hierarchy: avoid, minimize, restore, and offset biodiversity losses.