About BNG assessment
Joseph Ellul (5 Dolce Vita Corte, Triq San Mikiel, San Gwann, SGN 2303, Malta). We run this site and pass each enquiry to ecology consultants covering the enquirer's area.
Why this site exists
We read 43 providers' own pages on 11 October 2026 and only 6 of them print a figure, so the only way to see the spread is to read all of them and show the working. That is what this site is: one table, every source named, dated.
Who it is for
Anyone about to buy this service who wants to know what it costs before they ask, and who would rather see the published prices than a range somebody made up.
What is on this site
One question, "bng assessment", answered with a quote form that works on the page with no account, 5 guides on the questions around it, a data table you can cite (the figures and their method), and the sources every figure rests on.
- UK BNG Assessment Price Index: every published figure: Every provider we read that publishes a figure for bng assessment, what it publishes, and the day we read it. 6 of 43 read.
- Who publishes a price, and who makes you ask: 6 of 43 providers read for bng assessment publish a figure. These are the ones that do not.
- BNG assessment cost: what UK ecologists publish, and what it covers: BNG assessment cost in the UK: a median of £492 across the 6 consultancies that publish a price, £295 to £589, and what moves it.
- BNG metric calculation: how the 10% gain is measured, and the cost: A BNG metric calculation scores a site's habitats before and after development to show a 10% gain. What it measures, which tool, and what ecologists charge.
- Biodiversity net gain report: what the council needs, and when: A biodiversity net gain report and gain plan show how a development meets the 10% gain. The rules, the 8-week decision, and what ecologists charge.
What it does not do
- No ranking, no best-of list and no scores: the table is sorted by the figure, not by us.
- No paid placement, no affiliate links and no sponsored rows.
- No invented figure: a provider that publishes nothing is listed as publishing nothing.
Who answers for it
Joseph Ellul-Turner, the person responsible for this site and for where its enquiries go.
Reach us
Contact for a question about the site, or enquiries@bngassessmentcost.co.uk. The legal terms are on Terms and Privacy.
BNG assessment is a free introduction service operated by Joseph Ellul (5 Dolce Vita Corte, Triq San Mikiel, San Gwann, SGN 2303, Malta). We pass your details to ecology consultants covering your area, who quote you directly; we may receive a fee from them, and you pay nothing and are under no obligation. We are not ecologists and nothing here is planning or legal advice; we are not affiliated with Natural England, CIEEM or any council. No provider in the table has paid to be there. Every figure is read from the named provider's own public page on the date shown and is what that provider advertises, not a quote for your site.