Biodiversity Gain Plan in Surrey
Do you need a Biodiversity Gain Plan in Surrey before you can start work?
Where Biodiversity Net Gain applies, a Biodiversity Gain Plan becomes the legal document that allows work to begin. We put that plan together clearly, correctly and in a format councils approve, so your project moves ahead.
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Do You Need a Biodiversity Gain Plan in Surrey?
You’ll need a Biodiversity Gain Plan in Surrey if your planning permission includes a condition linked to Biodiversity Net Gain (BNG). The Biodiversity Gain Plan is the document that shows how the required biodiversity improvement will actually be delivered, how it will be maintained, and who is responsible for it.
Without an approved Biodiversity Gain Plan in place, many developments cannot legally begin, even where planning permission has already been granted.
Planning officers across Surrey frequently require formal Biodiversity Gain Plan evidence where development affects:Â
- Strategic housing growth and town expansion across Guildford, Woking, Epsom, Reigate and RedhillÂ
- Commercial and mixed-use development linked to the M25, M3, A3 and South Western Main Line, particularly around Woking, Weybridge and LeatherheadÂ
- Greenfield and rural edge development across the Surrey Hills AONB fringe, Mole Valley and Tandridge DistrictÂ
- River corridors, floodplains and sensitive chalk landscapes associated with the River Wey, Mole, Thames floodplain and North DownsÂ
If this evidence isn’t provided in the correct format, many planning applications aren’t validated at all, or they are delayed by conditions later in the process.
We provide Biodiversity Gain Plan services across: Guildford, Woking, Epsom, Reigate, Redhill, Weybridge, Leatherhead, Farnham, Camberley, Staines-upon-Thames and all surrounding towns, villages and rural areas across the county.Â
Why Planning Authorities in Surrey Request a Biodiversity Gain Plan
Planning Authorities across Surrey require a Biodiversity Gain Plan because Biodiversity Net Gain is now a statutory requirement under the Environment Act 2021. The Plan provides the legally enforceable route for delivering biodiversity improvements tied to a specific planning permission. Without an approved Plan, the BNG condition cannot be lawfully discharged, and development cannot commence on site.Â
Local Case Insight
How the Biodiversity Gain Plan Process Works
We produce planning-ready BNG Assessments aligned to Surrey’s policy expectations.
Key BNG Deliverables for Surrey Projects
Your Biodiversity Gain Plan is structured to meet Surrey’s planning requirements and typically includes:
Habitat delivery strategy — how and where biodiversity uplift will be achieved
Mapped habitat parcels — legally reliable plans linking habitats to the approved metric
Optional integration with a Habitat Management & Monitoring Plan (HMMP) where 30-year management is required
Submission-ready planning document — formatted for Local Planning Authority approval
This ensures your BNG condition in Surrey can be discharged cleanly and lawfully.
Step 1
Initial Review
We assess your existing BNG assessment, site layout and planning condition.
Step 2
Plan Preparation
Habitat delivery proposals, mapping and management requirements are drafted.
Step 3
Coordination Stage
The plan is aligned with your build programme and any wider ecological or planning documents.
Step 4
Submission and Support
 We respond to any LPA queries or amendments required.
Next Steps
Ready to secure approval and start on site? We’ll confirm what your Surrey site needs and help you move forward without unnecessary delay.Â
FAQ - BGP in Surrey
Does development in Surrey require a Biodiversity Gain Plan even on small sites?
Yes. Where development falls within the statutory scope of Biodiversity Net Gain legislation, a Biodiversity Gain Plan must demonstrate at least 10 percent measurable uplift. Small residential schemes are not automatically exempt and should be assessed carefully.
How do Thames Basin Heaths or Ashdown Forest constraints affect Biodiversity Gain Plans?
Where development lies within influence zones of protected heathland sites, ecological mitigation measures such as SANG provision may be required. The Biodiversity Gain Plan must remain consistent with these measures and ensure habitat proposals are realistic for local ecological conditions.
Does Green Belt designation remove the need for Biodiversity Net Gain?
No. Even where development is permitted within the Green Belt, statutory Biodiversity Net Gain requirements still apply. The Biodiversity Gain Plan must demonstrate compliance regardless of planning designation.
How are private estate redevelopments treated?
Redevelopment of large residential plots or private estates may involve mature trees, hedgerows or semi natural habitats. The Biodiversity Gain Plan must accurately calculate baseline habitat value and demonstrate measurable uplift.
Can high land values in Surrey affect Biodiversity Net Gain delivery?
High land values can limit the amount of land allocated to habitat creation. Where on site uplift is constrained, developers may need to secure off site biodiversity units. The Biodiversity Gain Plan must clearly confirm how statutory uplift is achieved.
Which authorities approve Biodiversity Gain Plans in Surrey?
Approval is handled by the relevant Local Planning Authority, such as Guildford Borough Council, Woking Borough Council, Reigate and Banstead Borough Council or others depending on site location.
Planning guidance for Guildford Borough Council can be accessed at:
https://www.guildford.gov.uk/planning
How are heathland or acid grassland habitats reflected in the Biodiversity Metric?
Heathland habitats can carry higher distinctiveness values within the Biodiversity Metric. The Biodiversity Gain Plan must ensure that losses are correctly accounted for and that proposed habitat types are ecologically appropriate.
What are common risks when preparing a Biodiversity Gain Plan in Surrey?
Risks include underestimating baseline habitat condition, over specifying habitat types that are unrealistic for soil conditions or failing to coordinate biodiversity proposals with SPA mitigation strategies.
Can Biodiversity Net Gain be delivered entirely off site?
Where on site delivery is demonstrably constrained, off site biodiversity units may be secured. The Biodiversity Gain Plan must confirm legal registration and long term securing arrangements.
How can ProHort support Biodiversity Gain Plan approval in Surrey?
ProHort prepares technically robust Biodiversity Gain Plans tailored to Surrey’s environmentally sensitive planning context. We ensure accurate metric modelling, realistic habitat proposals and clear securing mechanisms to minimise approval risk.
