Biodiversity net gain assessment cost (6 figures)
The median published figure in the UK BNG Assessment Price Index is 492 GBP across 6 sources' own pages (range 295 to 589 GBP), read 11 October 2026.
6 of the 4 named sources read in full publish a figure; 4 publish none, read 11 October 2026.
Every figure, with its source
One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.
| Source | Figure | Read |
|---|---|---|
| Biodiversity Net Gain Experts: Avoid Planning Delays, BNG Plans | 589GBP + VAT | 2026-10-11 |
| BNG Surveys from £499+VAT, Aware Ecology | 499GBP + VAT | 2026-10-11 |
| BNG Tool - Biodiversity Net Gain Calculator - Joe’s Blooms | 495GBP | 2026-10-11 |
| Ecology Surveys: Ecological Survey Services from £399 - Arbtech | 489GBP | 2026-10-11 |
| Biodiversity Net Gain Survey for Planning | ACP Consultants | 399GBP + VAT | 2026-10-11 |
| Ecological Services, Talk-Ecology | 295GBP | 2026-10-11 |
The sentence each figure was read from (6)
- Biodiversity Net Gain Experts: Avoid Planning Delays, BNG Plans, read 2026-10-11:
RAPID Biodiversity Assessments and Net Gain Plans from £589+VAT
- BNG Surveys from £499+VAT, Aware Ecology, read 2026-10-11:
The costs will differ depending on your project's complexity and size but will start from £499+VAT
- BNG Tool - Biodiversity Net Gain Calculator - Joe’s Blooms, read 2026-10-11:
From £495
- Ecology Surveys: Ecological Survey Services from £399 - Arbtech, read 2026-10-11:
From £489
- Biodiversity Net Gain Survey for Planning | ACP Consultants, read 2026-10-11:
At ACP, our professional fees for a straightforward BNG survey start from £399 + VAT.
- Ecological Services, Talk-Ecology, read 2026-10-11:
PEA & BNG from £295
Read in full, publishes no figure
4 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.
- Biodiversity Net Gain on Small Sites: Small Sites Metric - Arbtech, read 2026-10-27: every candidate on the page was refused
- Cost of Biodiversity Net Gain Creation and Maintenance - Arbtech, read 2026-10-27: read in full and no accepted figure on the page
- Small Sites Metric Calculation Tool, read 2026-10-27: every candidate on the page was refused
- Biodiversity Net Gain now extended to small sites - 8point9, read 2026-10-27: every candidate on the page was refused
Methodology
Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).
6 of the 4 named sources that could be read published a usable figure; 4 published none and are recorded as not published, never filled in; 43 could not be read (blocked, dead or unreachable) and count nowhere.
The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in GBP (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 158 candidate sentence(s) were refused by a reviewer with the reason recorded.
The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): median, lower and upper quartile and range of the published price per deliverable (small sites metric calculation, statutory biodiversity metric with baseline habitat and condition survey, biodiversity gain plan and habitat management and monitoring plan) across every UK ecology consultancy that publishes one, beside the share that publish a price at all against quote-only; repriced-since the previous read.
No consultancy publishes the market's spread; this is it.
158 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.
Sources (47)
- Biodiversity Net Gain Report | Specialists at BNG Reports - Arbtech(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain on Small Sites: Small Sites Metric - Arbtech(the publisher's own terms; quoted for reporting and comment)
- Cost of Biodiversity Net Gain Creation and Maintenance - Arbtech(the publisher's own terms; quoted for reporting and comment)
- Ecology Surveys: Ecological Survey Services from £399 - Arbtech(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain (BNG) | Arun Ecology | Horsham(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain | Baker Consultants(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Consultants in Canary Wharf, Effective BNG Planning E14 5(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Assessment in Greater London, BNG Reports(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Experts: Avoid Planning Delays, BNG Plans(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Yorkshire - Collington Winter Ecologists and Landscape Architects(the publisher's own terms; quoted for reporting and comment)
- Home(the publisher's own terms; quoted for reporting and comment)
- Avoid Development Setbacks: Ecology Survey from £399 - Ecology Surveys(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain - EMEC Ecology(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Assessment. Enviropass Expert BNG Surveys(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Assessments | Glaven Ecology | BNG | Environmental Bill(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Assessment and BNG Services(the publisher's own terms; quoted for reporting and comment)
- mmenvironment.co.uk(the publisher's own terms; quoted for reporting and comment)
- Developer Biodiversity Net Gain Calculator | Free Online Tool(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain - Nicholas Pearson Associates(the publisher's own terms; quoted for reporting and comment)
- Ecology & Biodiversity | Optimis Consulting(the publisher's own terms; quoted for reporting and comment)
- Specialising in ecological consultancy - RSK Biocensus(the publisher's own terms; quoted for reporting and comment)
- Ecological solutions - Southern Ecological Solutions (SES)(the publisher's own terms; quoted for reporting and comment)
- Small Sites Metric Calculation Tool(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain | BNG Consultant | Styles Ecology(the publisher's own terms; quoted for reporting and comment)
- Ecological Services, Talk-Ecology(the publisher's own terms; quoted for reporting and comment)
- Navigate Biodiversity Net Gain With Ease | Tyler Grange Blog(the publisher's own terms; quoted for reporting and comment)
- Ecology Consultancy(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net gain - Bristol - Acer Ecology(the publisher's own terms; quoted for reporting and comment)
- BNG Surveys from £499+VAT, Aware Ecology(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain | Environment Act 2021 | Maydencroft(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain (BNG), Crow Ecology, East Yorkshire based ecological consultancy c(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain | Ecology by Design(the publisher's own terms; quoted for reporting and comment)
- Ecology services | Cura Terrae Land & Nature(the publisher's own terms; quoted for reporting and comment)
- Biodiversity and Ecology, Gain Consulting(the publisher's own terms; quoted for reporting and comment)
- Iceni Ecology Ltd. | Ecology Consultancy | Norfolk(the publisher's own terms; quoted for reporting and comment)
- BNG Tool - Biodiversity Net Gain Calculator - Joe’s Blooms(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Consultancy | Lucion Group(the publisher's own terms; quoted for reporting and comment)
- BNG Consultants: BNG Services London, Surrey, Sussex & Kent(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain | Richard Green Ecology(the publisher's own terms; quoted for reporting and comment)
- Small Sites Metric Calculation Tool(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Consultants | Assessments & BNG Planning(the publisher's own terms; quoted for reporting and comment)
- Ecological Consultants | Surveys, BNG & Impact Assessments(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain in practice | The Wildlife Trust Consultancies(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain now extended to small sites - 8point9(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Survey for Planning | ACP Consultants(the publisher's own terms; quoted for reporting and comment)
- Biodiversity Net Gain Costs & Pricing | ACP(the publisher's own terms; quoted for reporting and comment)
- Registered Practices | CIEEM(the publisher's own terms; quoted for reporting and comment)
Cite or embed this figure
The median published figure in the UK BNG Assessment Price Index is 492 GBP across 6 sources' own pages (range 295 to 589 GBP), read 11 October 2026.
6 of the 4 named sources read in full publish a figure; 4 publish none, read 11 October 2026.
Cite as: "bngassessmentcost.co.uk UK BNG Assessment Price Index", updated 2026-10-28, https://bngassessmentcost.co.uk/datasets/uk-bng-assessment-price-index/.
Download the CSV (6 rows, computed 2026-10-28)