Cosdon Consulting is a specialist Biodiversity Net Gain and natural capital consultancy in Devon, working across the South West and nationwide. Senior expertise on every BNG assessment, precise metric work, and the judgement to deliver an outcome that holds up; for the site, the planning authority, and the decades that follow.
From first metric run to thirty-year monitoring.
Baseline surveys, metric calculation, and net gain strategy.
Feasibility, design, and long-term management planning.
Subcontracted allocation and fee scoping support.
Constraint mapping and metric-ready spatial data.
Practical DEFRA metric and BNG workshops.
Independent checking of DEFRA metric calculations against the calculation logic.
Independent review of BNG and HEP assessments on behalf of local planning authorities.
Custom tooling for QA, desk studies, and reporting.
At a larger consultancy, your assessment is often scoped by a senior name and then delivered by whoever's available; frequently someone still learning the metric. The senior review, if it happens, is at the end.
Cosdon Consulting is built the other way round. The person who scopes your project is the person who does the work and answers the phone. Senior judgement isn't a final check; it's applied to every decision, from baseline to submission.
One senior specialist across the whole project. No handoffs, no account managers, no version of your site explained twice.
The metric strategy and the calls that shape it are made by someone who has handled schemes from single units to large habitat banks.
BNG and natural capital are the whole business, not one service line among twenty. The depth shows in the work.
No drawn-out onboarding, no surprises. Most projects follow the same straightforward path.
Tell us about your site; location, scheme size, and timeline. A quick call if it helps.
A clear, fixed quote based on what the site actually needs, usually within two working days.
The work is carried out and QA'd by a senior specialist; the same person throughout.
Reports ready for planning, with support through determination and conditions.
Send over the basics and we'll come back with a scoped quote, usually within two working days.
Get a quote
COSDON CONSULTING