30/07/2025
BNG: 3 Things every developer needs to know
Biodiversity Net Gain (BNG) is now a legal requirement for planning permission in England, and ignoring it could cost you time and money.
Here are 3 essential facts developers need to keep in mind:
1) 10% uplift is now mandatory
You must deliver and prove a 10% gain using the approved biodiversity units metric. No metric = no approval.
2) Surveys are seasonal
Need a bat survey or great crested newt survey? Miss the window, and you risk delays.
Book your protected species surveys early to stay on schedule.
3) Off-site offsetting is an option - but it’s costly
Buying BNG offset credits adds complexity. It’s cheaper and smarter to design habitat gains into your site from day one.
📩 Need a BNG checklist to get started?
DM us now and we’ll send one straight over.
🔍 Work with a CIEEM-registered ecologist: leithecology.co.uk