Draw a boundary on the satellite map. Get a BNG screening report in 60 seconds — auto-populated from 7 UK government data sources. No ecologist visit needed.
No account required. No credit card. Just draw and analyse.
Four steps. Under two minutes. No expertise required.
Search by postcode or navigate the satellite map. Zoom in to see your site clearly.
Click points around your site boundary using the polygon tool. Double-click to finish.
BioGain queries 7 government databases. Priority habitats, ancient woodland, SSSIs, flood risk, species, soil, LIDAR — all in seconds.
View results on the map, download a PDF, or share a link. BNG baseline calculated using Statutory Biodiversity Metric.
Every data point an ecologist checks in a desk study — queried in real-time from official UK government APIs.
Natural England's Priority Habitat Inventory. Deciduous woodland, lowland meadow, coastal saltmarsh, and more.
Woodland present since at least 1600 AD. Irreplaceable habitat — ASNW and PAWS locations identified.
Sites of Special Scientific Interest. Statutory protection — development requires Natural England consultation.
Environment Agency flood zones. Affects habitat creation potential and development viability.
NBN Atlas protected and notable species. Birds, mammals, amphibians, invertebrates — verified records with dates.
British Geological Survey superficial deposits. Soil type determines habitat creation potential.
EA 1m Digital Terrain Model. Min/max/average elevation and terrain classification across your site.
Two paths, one platform. Start as a developer, upgrade when your ecologist gets involved.
"Know your site before you hire an ecologist"
"Replace the spreadsheet. Keep the expertise."
Ecologists charge £2,000–£10,000 per assessment. Try BioGain free for 14 days.
BNG is a legal requirement (Environment Act 2021) that all planning applications in England must demonstrate a minimum 10% increase in biodiversity value. It's been mandatory for major developments since February 2024 and small developments since April 2024.
Not always. Small sites (under 1 hectare, no priority habitats) can use the Small Sites Metric, which a "competent person" can complete — no ecologist required. For complex sites with protected species or priority habitats, you'll need a professional ecological assessment.
BioGain queries official UK government APIs in real-time — the same data sources ecologists use in desk studies. It's not a replacement for a full ecological survey on complex sites, but it provides an accurate baseline screening that can save hours of manual data gathering.
Natural England (priority habitats, ancient woodland, SSSIs), Environment Agency (flood risk, LIDAR), British Geological Survey (soil/geology), and NBN Atlas (species records). All data is queried fresh — we don't cache or store environmental data.
BioGain reports are suitable as screening evidence and supporting documentation. For formal planning submissions on complex sites, an ecologist's sign-off is typically required. Our Professional plan (£99/mo) includes Statutory metric export for ecologists.
Traditional ecological surveys cost £2,000–£10,000+ per site. Off-site biodiversity units cost £20,000–£50,000+ each. Statutory credits (last resort) are £42,000+ per unit. BioGain offers a 14-day free trial, then Pro from £39/mo.
Draw a boundary. Get instant results. No signup, no credit card, no waiting.