BNG consultancy · Scoping · Planning coordination
Appoint BNG consultants for your planning project
Appointing a BNG consultant should make the next decision clearer. ACP Consultants helps developers, architects, planning teams and landowners understand the ecological work their proposal needs. We can scope surveys, assess biodiversity units, review design options and prepare the agreed BNG documents.
Whether your project is at feasibility stage, approaching submission or addressing a planning condition, start with the site and your current plans. We will explain the proposed scope, available information and next steps before work is instructed.
- Start with the planning stageIdentify whether BNG applies and which decision comes next.
- Agree a defined scopeUnderstand the proposed surveys, calculations and documents before instruction.
- Keep the team alignedConnect ecological advice with layouts, landscaping and programme decisions.
Who should appoint a BNG consultant?
Developers and landowners may need BNG advice when a proposal changes existing habitats or requires evidence for the planning process. Architects and planners often appoint the ecology specialist on the client's behalf. Landscape architects and project managers may also need technical input while designs are being developed.
For a new proposal, early advice can help establish what is known about the site and what still needs checking. For a consented proposal, consultancy may focus instead on an outstanding Gain Plan, updated calculations or habitat-delivery responsibilities.
A development's size alone does not settle its BNG position. For example, exemptions changed on 6 August 2026, so the application date, red-line boundary and habitat impacts matter. Our BNG legislation and guidance overview explains the wider framework; the consultant can help identify which checks are relevant to your scheme.
Common reasons to get in touch
- You are evaluating a site or changing the layout and need to understand habitat constraints.
- Your architect or planner needs a clear ecology and BNG brief before submission.
- You have an existing ecological survey or metric workbook but need it reviewed against revised proposals.
- A planning decision, condition or authority response identifies outstanding BNG information.
- You need to coordinate landscape proposals, off-site provision or long-term habitat management.
When should you bring a consultant into the project?
Choose the position closest to your project. Then use the questions below to agree the work needed at that stage.
Before the design is fixed
At feasibility stage, we can review available plans, habitat information and likely survey needs. This can help the team identify decisions that are more difficult to revisit after the design progresses.
Ask first: Does mandatory BNG apply, what habitat information exists, and could ecology affect the design?
Ask about feasibility adviceBefore a planning submission
We can help define the agreed baseline, metric and reporting inputs. The architect, landscape designer and planning adviser should be working from consistent plans and habitat assumptions.
Ask first: What survey, metric and planning evidence do we need, and who is supplying each input?
Scope planning-stage BNGAfter planning permission
If BNG applies, a Biodiversity Gain Plan normally needs approval before development starts. We can review what is already complete, identify missing evidence and scope the remaining work. See our Biodiversity Gain Plan service for the document-specific requirements.
Ask first: What is outstanding before commencement, and is existing evidence still consistent with the permission?
Discuss a BNG conditionDuring long-term habitat delivery
Some projects also need detailed habitat management, monitoring and secured responsibilities. This is a different appointment stage from the initial baseline survey. Our HMMP service covers that specialist work.
Ask first: Who will manage, monitor, report and fund each relevant habitat obligation?
Discuss habitat delivery
If more than one stage applies, send the documents you have. We can agree a proportionate scope rather than assume the full package is needed.
What can BNG consultancy include?
The exact scope depends on the planning route, existing evidence and project stage. We may provide one specialist input or coordinate several related tasks within an agreed appointment.
Applicability and scoping
Review the application context, site boundaries, available ecology information and likely BNG route. We identify what needs confirmation rather than assuming every development requires the same package.
Habitat and metric evidence
Arrange or review appropriate baseline habitat surveys, mapping and condition information. We can assess how proposals affect biodiversity units and work through design options. For the detailed methodology, see our BNG assessment and UKHab baseline service.
Planning and reporting
Prepare the agreed technical explanation, calculations, maps and supporting documents for the relevant submission stage. Our BNG report service describes the report output rather than the whole consultancy appointment.
Habitat-delivery advice
Coordinate proposed habitat creation or enhancement with landscaping, management and project responsibilities. If the scheme needs secured long-term delivery or specialist monitoring, this can be separately scoped.
Scope note: Confirm who will supply protected-species surveys, arboriculture, landscape design, legal agreements, off-site units and monitoring where needed. Our proposal identifies the agreed tasks, assumptions and interfaces.
What will you receive?
You should know what each deliverable answers and when it will be available. Depending on the commission, the package may include:
- A written scope and programme: agreed tasks, assumptions, dependencies and information required from others.
- Baseline evidence: habitat survey findings, mapping and other agreed ecological inputs.
- Biodiversity calculations: the appropriate completed metric workbook and explanation of options or shortfalls.
- Planning documents: an agreed BNG assessment or report, and a Biodiversity Gain Plan where commissioned and needed.
- Delivery information: habitat proposals, an HMMP or monitoring support where these are in scope.
- A coordinated response: clarification of material design changes, third-party inputs and requested revisions under the agreed terms.
Each deliverable supports a different decision. If fieldwork is the immediate requirement, visit our BNG survey service. For help understanding the full planning assessment, start with the BNG assessment service.
Which BNG consultancy support fits your project?
Use these examples to frame your enquiry and compare the deliverables offered in each quotation.
| Project position | First question to resolve | Work to discuss | Useful information to send |
|---|---|---|---|
| Stage 1Site feasibility | Does BNG apply, and what habitat information is missing? | Applicability and scoping review; appropriate survey programme if required | Red-line plan, site address, initial layout |
| Stage 2Preparing a planning application | Is the baseline reliable, and do proposals support the intended BNG position? | Baseline survey, statutory metric calculation, design coordination and agreed reporting | Current plans, landscaping and existing ecology reports |
| Stage 3Permission granted | What information remains outstanding before commencement? | Review of decision and conditions, Gain Plan and supporting calculations where required | Decision notice, approved plans, metric and planning correspondence |
| Stage 4Habitat delivery | Who is responsible for secured creation, management and monitoring? | Habitat proposals, HMMP and monitoring support where applicable and separately scoped | Habitat plans, agreement details and landowner or management contacts |
CHOOSE WITH CONFIDENCE
How to compare BNG consultants and quotations
Start with the expertise your site needs. Then compare the proposed evidence, review process and delivery responsibilities. A clear appointment helps the team budget for the whole task.
Who will undertake and review the work?
Ask about relevant habitat identification, condition assessment and statutory metric experience. Also confirm the named technical reviewer and any specialist survey qualifications.
CIEEM provides directories and guidance for selecting ecologists. Check an individual's membership or a practice's registration directly when those credentials are claimed.
What does the survey and calculation cover?
Compare the surveyed boundary, habitat coverage and fieldwork dates. Ask which classification and workbook versions the team will use. Existing evidence also needs a suitability review.
For example, a river may require a trained RCA surveyor. An engineering design may need additional hydrology or geomorphology input.
What will the project team receive?
List the plans, workbook, condition evidence and reports included. Then confirm file formats, review stages and the arrangements for using or sharing the commissioned material.
Also agree how many design iterations and authority responses the fee covers. This makes later changes easier to manage.
How will responsibilities and costs be managed?
Review the scope, programme dependencies, payment terms and relevant insurance. Confirm the route for technical queries and any additional work.
Where habitat units or long-term management are involved, identify the separate purchasing, legal and delivery responsibilities.
A useful quotation connects each task to a named output and an agreed decision point. Ask for clarification wherever an important input or responsibility remains unclear.
COORDINATED DELIVERY
Who supplies each part of the BNG evidence?
The consultant coordinates ecological evidence with the people who design, approve and deliver the scheme. Agree the lead for each task at the start.
- Ecologist and metric assessor
- Survey and classify habitats, assess condition, test biodiversity outcomes and explain the supporting evidence.
- Architect and landscape designer
- Provide current layouts, planting, levels, habitat extents and buildable specifications. Then resolve design changes with the assessor.
- Watercourse and engineering specialists
- Supply the relevant RCA, drainage, flow, bank, crossing or geomorphology evidence where the site and proposals require it.
- Client, land manager and legal adviser
- Confirm control of land, funding, delivery obligations and legal arrangements. Identify who will manage, monitor and report habitat progress.
- Planning adviser and authority
- The adviser coordinates the submission. The authority assesses the planning evidence and the relevant approval requirements.
ORIGINAL COORDINATION EXAMPLE
A drainage revision changes the proposed grassland
A revised attenuation basin reduces an area previously shown as grassland. Before issuing the BNG documents, the team follows four linked checks.
- Designer: issues the revised basin footprint, levels and drainage assumptions.
- Ecologist: confirms the achievable habitat type, extent, condition target and management needs.
- Metric assessor: updates the affected parcels and checks unit results and trading rules.
- Project lead: coordinates matching revisions of the landscape plan, metric, report and management documents.
As a result, the submission describes one consistent design. For the detailed management stage, see our HMMP guidance.
How we work with your project team
Review the enquiry
Send us your site location, red-line plan, proposals, planning stage and any existing BNG/ecology material. We identify the main unknowns and discuss the likely scope.
Agree the instruction
We provide a quotation identifying the work proposed, assumptions, exclusions, programme dependencies and deliverables. Surveys or detailed reporting begin once the appointment is agreed.
Assess and coordinate
We complete the agreed fieldwork or desk-based review and maintain dialogue with the relevant design-team contacts. Where a layout changes, we explain which calculations or supporting information need review.
Provide the agreed outputs
We issue the commissioned material in accordance with the agreed deliverables and terms. Further authority comments, revisions or post-permission work can be considered as separate or extended instructions where appropriate.
A clear consultant appointment works best when the design team identifies who supplies revised drawings, who signs off landscape proposals and who coordinates the planning submission. These roles can be confirmed when the scope is agreed.
Have drawings and a planning deadline? Send the site details so we can review the scope.
What we need to prepare a useful quotation
You do not need a complete technical package before asking a question. However, a few documents can make the initial discussion more specific.
Please send what you already have
- Site address or postcode and the relevant local planning authority.
- A location/red-line boundary plan, with approximate site area where known.
- Existing and proposed layouts, landscaping or masterplan drawings, if available.
- Planning reference, decision notice or relevant conditions where permission exists.
- Previous ecology reports, UKHab/BNG surveys, metric spreadsheets, habitat plans or authority comments.
- Current programme or submission deadline and a nominated project contact.
If information is missing, tell us what is not yet available. We can identify which items are essential for the agreed stage and which can follow later. An enquiry does not commit you to commissioning an assessment.
What affects the scope and fee?
Site extent, habitat complexity, access and survey timing, the quality of existing data, design revisions and the required submission documents all influence the work. Specialist watercourse, protected-species or long-term management inputs may need separate consideration. We provide a project-specific fee against a defined scope. Therefore, compare quotations alongside their survey coverage, deliverables and allowance for revisions.
Questions about appointing BNG consultants
Do I need a consultant if my site is small?
Not always. The first question is whether mandatory BNG applies. From 6 August 2026, qualifying applications for developments of 0.2 hectares or less can be exempt if they do not impact onsite priority habitat. Other exemptions and transitional rules may apply. Even where BNG applies, an eligible Small Sites Metric does not legally require an ecologist to complete it, although professional help may still be useful. See our Small Sites Metric service.
When is the best time to appoint a BNG consultant?
Ideally, before site layouts and landscape proposals are fixed. Early advice can highlight survey requirements and habitat constraints. If permission has already been granted, we can instead review the outstanding BNG condition and evidence.
Can you work with my architect and planning consultant?
Yes. A BNG commission often depends on current layout, landscaping and planning information. We can agree the communication points and documents needed from the appointed design team as part of the scope.
Can you review a BNG survey or metric prepared by someone else?
We can consider reviewing existing material, subject to its age, completeness, survey methodology and access to underlying plans and calculations. The quotation will explain whether a review is sufficient or whether further fieldwork or recalculation is needed.
Is the BNG report the same as the Biodiversity Gain Plan?
No. An assessment/report supports the planning evidence and explains the findings. Where the statutory gain condition applies, the Biodiversity Gain Plan is a separate prescribed approval step before commencement. The right deliverables depend on the stage and planning route.
Will I always need a 30-year management plan?
Off-site gains and significant on-site gains require secured habitat delivery for at least 30 years. The delivery route determines the management plan and legal arrangements needed. For example, confirm who funds the work, monitors condition and responds when a habitat falls behind its target.
How do you agree a realistic BNG programme?
We agree deliverables, survey windows, information deadlines and review points with the project team. The programme also allows for design changes and specialist inputs. The planning authority determines the application and any required approvals.
What should I include in my first enquiry?
A site address, red-line plan, proposed development, planning stage and deadline are the best starting points. Mention any existing ecology/BNG work or planning conditions. We will confirm how to share documents. We can then discuss a defined scope.
Start with your site
Clear scope.Confident next steps.
Tell us where the site is, what you propose and which planning stage you have reached. We will review the enquiry and explain the next appropriate step.
- Your project
Outline the proposal and the BNG advice or deliverables you need.
- Your planning stage
Share the planning reference, key dates and any advice already received.
- Your existing evidence
Mention your red-line plan or previous ecology information. We will confirm how to share documents.
Discuss your site with ACP
Start with the information you have. Share your email, site location and the advice you need.