BNG compliance,
handled end-to-end
Mandatory 10% Biodiversity Net Gain under The Environment Act 2021 — we provide the assessments, metric calculations, and habitat plans your planning application needs.
What is Biodiversity Net Gain?
Biodiversity Net Gain (BNG) is a planning requirement that ensures development leaves habitats for wildlife in a measurably better state than before.Since February 2024, a minimum 10% net gain is a legal obligation for non-exempt developments in England.
BNG can be delivered on-site or off-site. Off-site delivery can be achieved through the purchase of biodiversity units from a habitat bank, or as a last resort, via purchasing statutory biodiversity credits. Our ecologists calculate the baseline biodiversity units of your existing site, work with you to design a delivery strategy to suit project needs, and produce the BNG documentation your LPA needs to support your planning application.
Is BNG mandatory for your development?
Check whether your project is affected.
Major developments
10+ dwellings, 1,000m² floor space, or sites over 1 hectare. BNG is a mandatory condition of planning approval.
Small developments
1–9 dwellings on sites ≤1 hectare. Commercial developments under 1,000m². Minerals and non-waste development.
Major infrastructure (NSIPs)
Nationally Significant Infrastructure Projects that apply for a development consent order after this date.
Some sites are exempt
Speak with us for free, no-obligation advice regarding applying BNG exemptions to your site.
Our BNG services
Everything you need to satisfy your planning authority, from baseline BNG assessments to legally compliant habitat management plans.
Baseline BNG Assessment
We carry out a baseline assessment of your site, advising on the biodiversity unit value of the site and any potential ‘showstoppers’ for BNG. Useful at site selection stage.
Statutory Metric Calculations
Accurate baseline and post-development biodiversity unit calculations using the government's statutory metric and habitat condition assessment survey.
Biodiversity Net Gain Reports
Full BNG reports prepared to planning authority standards, documenting how your development meets the 10% uplift requirement.
Biodiversity Gain Plans
Comprehensive plans showing how you will achieve mandatory Biodiversity Net Gain (BNG), provided in the standard statutory template.
Habitat Management & Monitoring Plans
Long-term HMMPs ensuring habitat creation is maintained and monitored for the required 30-year obligation period.
Habitat Surveys For BNG
Our qualified ecologist surveyors carry out BNG-compliant UKHab and habitat condition assessment surveys
Your BNG journey, step by step
Free Consultation & Quotation
We discuss your project, timeline and planning requirements, then provide a scope and quote for the work — no obligation.
Stage 1 BNG Assessment
Site survey & baseline. Our ecologists visit the site, record habitats, and calculate your pre-development biodiversity units.
Stage 2 BNG Assessment
Post-development habitats design & calculation. We model delivery options, run statutory metric calculations, and identify the most cost-effective route to 10%+.
Report & Submission
We provide a planning-ready BNG Report, ready for LPA submission.
BNG FAQs
Does my development need BNG?
Non-exempt new planning applications in England submitted after February 2024 require BNG. The rules for exemptions from mandatory BNG are changing — contact us and speak with an ecologist for a free assessment as to whether any exemptions can be applied to your site.
How much does a BNG assessment cost?
Cost depends on site size, habitat complexity, and delivery requirements. Contact us for a tailored quote — we'll confirm fees before any work begins.
Do local councils require more than 10%?
Yes — some Local Planning Authorities require 20%+ BNG under local policy. We advise on local requirements as part of our assessment.
What if I can't achieve 10% on-site?
Off-site habitat units or statutory biodiversity credits can make up any shortfall. We'll explore all options and identify the most cost-effective route for your project.
What is a Biodiversity Gain Plan?
A Biodiversity Gain Plan is a document submitted to the LPA confirming how the 10% gain will be achieved and maintained over a 30-year period. It is required to discharge the pre-commencement BNG condition.
Ready to discuss your project?
Our ecologists will review your site details and respond within one working day with a clear, no-obligation quote.