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Free calculator · for landowners

What your land could earn from BNG

See how many biodiversity units your land could create, what they might sell for as a one-off sale, and what could be left after 30 years of creating and looking after the habitat.

About your land

1 hectare is about 2.5 acres.
Farmed grassland is usually poor. Cropland is not scored for Condition
How healthy a habitat is, scored as poor, fairly poor, moderate, fairly good or good. Better condition raises the number of biodiversity units the land is worth in the metric. Learn more, so leave this for crops.
Does the Local Nature Recovery Strategy (Local Nature Recovery Strategy (LNRS)
England has 48 LNRS areas, each with a published plan showing where nature recovery matters most. Location rules are expected to move from LPA and NCA areas to LNRS areas, but the date is not confirmed. Learn more) mark this land for this kind of habitat?

If it does, the metric adds 15% for high Strategic significance
A bonus of up to 15% in the metric for habitat in a location that a local nature strategy identifies as a priority. Habitat elsewhere gets no bonus. Learn more. Your council's LNRS map shows it, and the result names the LNRS area of the postcode. Not sure counts as no, so we do not overstate the value.

Costs and prices we assume (change any of them)

These are our starting figures from published sources, listed on How our calculators work. Enter your own quotes if you have them.

Defra, Biodiversity net gain impact assessment (2019): net present value of 30 years of creation and maintenance, per hectare. 2019 prices, not inflated.
Defra, Biodiversity net gain impact assessment (2019): survey cost per hectare. 2019 prices, not inflated.
Huntingdonshire District Council, Habitat Banking Programme report (Bio4All pilot): ecological baselining and HMMP per site.
Tendring District Council, BNG habitat bank fees 2025/26: monitoring for sites under 20 hectares (years 2, 5, 10, 15, 20, 25 and 30). Councils set their own fees.
Natural England registration fee (gov.uk, Register a biodiversity gain site).
We have found no published figure for this, so it is not included unless you enter one.
Your own price per unit, £ (low, middle, high)
Leave empty to use prices from BNG Online listings and sales, or published market prices.

Or upload your metric

If an ecologist has completed a statutory biodiversity metric for the land, upload it and we value the units it shows. We do not keep the file.

Ready to sell units? Verification is a separate step: start your verification.