Biodiversity Net Gain (BNG) Credits and Units for Sale
If you’re searching for BNG credits for sale to meet the biodiversity net gain requirements under the Environment Act 2021, ACP Consultants can help. We connect developers, planning consultants, and landowners with compliant biodiversity units and off-site BNG credits across England.
Whether you need to buy BNG units for a project or explore opportunities to sell biodiversity credits through a habitat bank, our team provides clear guidance, due diligence, and access to verified credit providers. From statutory DEFRA credits to private market units, ACP ensures your project achieves full BNG compliance efficiently and transparently.
- Our Biodiversity Net Gain (BNG) Services in England:
- BNG baseline habitat surveys (Metric 4.0 compliant)
- Biodiversity unit calculations & deficit analysis
- Habitat creation, enhancement & on-site mitigation design
- Biodiversity Gain Plans (BGP) for planning submission
- Off-site BNG strategy & unit sourcing advice
- Habitat Management & Monitoring Plans (HMMP)
- Pre-application BNG feasibility & risk reviews
- Planning condition discharge & post-consent support
We follow a simple, transparent process to ensure your project runs smoothly from the very first contact to the final report. Our approach is designed to provide you with clarity at every step, so you’re fully informed and confident in moving forward.
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Step 1: Request a Quote
Fill out our quick quote form or call us, and our team will provide a free, no-obligation quote, outlining the services tailored to your needs.
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Step 2: Confirm Your Booking
Once you approve the quote, simply return the booking form. We’ll schedule your survey and ensure all the details are taken care of.
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Step 3: Receive Your Report
After your survey is completed and payment is received, we’ll promptly issue your survey report, ensuring you get the results as quickly as possible.
In the past year, we’ve delivered over 750+ audit-ready reports supporting 400+ projects for developers, planners, and architects nationwide. We put quality over quantity and build lasting relationships based on trust, ensuring your planning applications are backed by robust evidence and delivered on time.
What Are BNG Credits?
BNG credits represent a measurable environmental value assigned to the creation or enhancement of biodiversity. Introduced under the Environment Act 2021, they allow developers to offset unavoidable habitat losses by purchasing equivalent biodiversity gains elsewhere. These credits ensure that new developments leave nature in a measurably better state than before.
Each credit corresponds to a calculated biodiversity unit under the DEFRA Biodiversity Metric, reflecting habitat type, area, condition, and distinctiveness. Purchasing BNG credits for sale can help developers achieve statutory 10 percent net gain when on-site measures are not viable.
ACP Consultants guide developers through both statutory and market credit options, ensuring full compliance with Natural England’s registration and monitoring standards.
BNG Credits vs Biodiversity Units
Although often used interchangeably, BNG credits and biodiversity units refer to distinct mechanisms within the same framework.
- BNG Credits are part of the national statutory credit scheme administered by DEFRA and Natural England. They are a last-resort option, used only when on-site or off-site units cannot be secured.
- Biodiversity Units, on the other hand, are created and traded within the private market through registered habitat banks or landowner-led enhancement projects.
Understanding this distinction is critical for planning compliance. Developers should always explore private biodiversity units for sale before turning to statutory credits, as the latter are often more expensive and subject to strict eligibility criteria.
Statutory vs Market Credits
Aspect | Statutory Credits (DEFRA) | Market Units (Private Providers) |
Administered by | DEFRA & Natural England | Landowners / Habitat Banks |
Use case | Last resort, national scheme | Local off-site delivery |
Pricing | Fixed government rate | Market-driven |
Registration | Automatic via DEFRA | Must appear on Biodiversity Gain Site Register |
Long-term management | Central oversight | Private legal agreements / conservation covenants |
ACP helps clients navigate both pathways, comparing BNG credits cost and local availability to achieve the most practical and lawful solution.
The National Statutory Credit Scheme
The DEFRA Statutory Biodiversity Credit Scheme was established to ensure that all developments can comply with BNG requirements, even where no suitable off-site options exist. The scheme is managed by Natural England, which calculates and sells statutory biodiversity credits on behalf of the UK government.
Developers purchasing statutory credits pay a fixed fee per unit, with revenue reinvested into nationally significant habitat restoration projects. This mechanism guarantees a baseline of ecological improvement across England.
However, statutory credits are designed as a last resort. Planning authorities expect developers to demonstrate that all feasible on-site or local off-site options have been exhausted first.
ACP Consultants support clients in preparing the evidence needed to justify the purchase of statutory credits, including feasibility assessments, BNG strategy documentation, and biodiversity gain plan submissions. We also help evaluate how many credits are required, using DEFRA’s latest BNG credit calculator, and guide you through the purchasing and documentation process with Natural England.
DEFRA and Natural England Administration
The administration of BNG credits and statutory biodiversity units is overseen jointly by DEFRA and Natural England, ensuring that all Biodiversity Net Gain (BNG) transactions align with the Environment Act 2021. DEFRA is responsible for setting national policy, including the pricing framework for statutory BNG credits, while Natural England manages the operational delivery of the system, including the Biodiversity Gain Site Register and verification processes.
Under the statutory framework, developers must first complete a Biodiversity Metric 4.0 calculation to determine residual biodiversity loss after on-site mitigation. Where this loss cannot be addressed through on-site or private off-site biodiversity units, statutory credits may be purchased as a last resort. To do so, developers must demonstrate that no suitable biodiversity units for sale are available within the private market, supported by clear evidence submitted as part of the Biodiversity Gain Plan.
Natural England administers the purchase process, including validation of eligibility, calculation of required units, and confirmation of payment. Once approved, statutory credits are recorded and linked to the development through the register, ensuring transparency and auditability. This system ensures that all BNG credits are traceable and contribute to nationally coordinated habitat creation.
The structured administration of BNG credits provides consistency across England, giving planning authorities confidence that biodiversity losses are properly compensated and that all credit transactions meet statutory requirements.
Private Market Options
The private market for biodiversity units has rapidly expanded since the introduction of BNG legislation. Landowners, estate managers, and environmental organisations are now creating habitat banks that offer off-site biodiversity units for sale directly to developers.
These market-based units provide greater flexibility and local ecological value compared with statutory credits. They are registered on the Natural England Biodiversity Gain Site Register, supported by long-term management and monitoring plans secured through Section 106 agreements or conservation covenants.
ACP Consultants maintain partnerships with multiple habitat banks across England, including sites near London, Birmingham, and Manchester. Whether you need BNG credits for sale near me or are exploring land registration for your own biodiversity project, we provide transparent market intelligence, pricing data, and due diligence support.
Habitat Banks and Off-Site Units
Habitat banks are a key component of the private market for biodiversity units, providing developers with access to off-site BNG solutions where on-site delivery is not sufficient. A habitat bank is typically a parcel of land where habitats are created, enhanced, or restored to generate biodiversity units for sale under the DEFRA Biodiversity Metric 4.0. These sites are secured for long-term ecological management, usually for a minimum of 30 years, through legal mechanisms such as conservation covenants or Section 106 agreements.
Each habitat bank is registered on the Natural England Biodiversity Gain Site Register, ensuring that all biodiversity units are verified, traceable, and compliant with statutory requirements. Units generated from these sites can then be sold to developers to offset residual biodiversity losses, helping them achieve the mandatory 10% Biodiversity Net Gain.
Off-site units from habitat banks often provide greater flexibility and ecological value compared to statutory credits, particularly where they are located close to the development site. This proximity reduces spatial risk and aligns with local planning authority preferences for delivering biodiversity enhancements within the same ecological network.
ACP Consultants works closely with a network of verified habitat banks across England, providing clients with access to available biodiversity units for sale. We undertake due diligence on each site, reviewing baseline assessments, habitat management plans, and legal agreements to ensure that all off-site units meet DEFRA and Natural England standards before purchase.
How to Purchase BNG Credits
Purchasing BNG credits or biodiversity units for sale involves a structured process that ensures compliance with the statutory biodiversity metric and planning requirements. The first step is to complete a Biodiversity Metric 4.0 calculation to determine the number of biodiversity units required to achieve at least 10% Biodiversity Net Gain. This establishes whether on-site mitigation is sufficient or if off-site units or statutory credits are needed.
Once the requirement is defined, developers must explore the private market for biodiversity units. This typically involves identifying suitable habitat banks offering off-site units within the same local planning authority area or ecological region. If no appropriate units are available, statutory BNG credits administered by DEFRA may be considered as a last resort.
The purchase process includes agreeing commercial terms with the habitat bank provider, securing legal agreements such as Section 106 obligations or conservation covenants, and ensuring that the units are registered on the Biodiversity Gain Site Register. All transactions must be documented within the Biodiversity Gain Plan submitted to the local planning authority.
ACP Consultants simplifies this process by managing unit sourcing, verifying availability, and coordinating legal and ecological requirements. We ensure that all purchased biodiversity units are compliant, properly registered, and aligned with DEFRA and Natural England guidance, reducing risk and avoiding delays during planning determination.
Step-by-Step Process with ACP
ACP Consultants provides a structured, end-to-end approach to sourcing and securing BNG credits and biodiversity units for sale, ensuring full compliance with the statutory biodiversity metric. The process begins with an initial consultation and review of the project’s baseline ecology and Biodiversity Metric 4.0 results. This allows us to identify any shortfall in biodiversity units and confirm whether off-site delivery is required.
We then assess available options within the private market, identifying suitable habitat banks that offer compliant biodiversity units. This includes reviewing location, habitat type, unit availability, and pricing to ensure alignment with planning requirements and project viability. Where necessary, we also advise on the use of statutory BNG credits if no suitable off-site units are available.
Once a suitable solution is identified, ACP coordinates the legal and technical aspects of the transaction. This includes liaising with landowners, solicitors, and planning consultants to secure agreements such as conservation covenants or Section 106 obligations. We also ensure that all units are correctly registered on the Biodiversity Gain Site Register and reflected in the Biodiversity Gain Plan.
Throughout the process, we maintain a clear audit trail, ensuring that all documentation is aligned with DEFRA and Natural England guidance. This approach provides clients with confidence that their BNG strategy is robust, compliant, and ready for planning approval.
Typical Prices and Availability
The cost of BNG credits and biodiversity units for sale varies significantly depending on habitat type, location, and market conditions. Prices are influenced by the ecological value of the habitat being created or enhanced, with higher-distinctiveness habitats such as woodland, wetland, or species-rich grassland typically commanding higher prices per biodiversity unit. In contrast, lower-value habitats such as grassland may be more affordable but generate fewer units per hectare.
Availability is also highly location-dependent. In areas with limited supply of habitat banks, particularly in high-demand regions such as the South East of England, prices can increase due to competition for local biodiversity units. Conversely, areas with established habitat banks may offer more competitive pricing and greater flexibility in unit selection.
Statutory BNG credits, administered by DEFRA, have fixed pricing based on habitat type and difficulty of delivery. However, these are generally more expensive than private market units and are intended as a last resort when no suitable off-site options are available.
ACP Consultants maintains up-to-date market intelligence on BNG credit pricing and availability across England. By analysing both statutory and private market options, we help clients identify cost-effective solutions that meet planning requirements while maintaining project viability and ensuring full compliance with Biodiversity Net Gain legislation.
In most cases, biodiversity units for sale range from £20,000 to £40,000 per unit, although prices can exceed £100,000 for high-value habitats or constrained locations.
Make Sense of the Biodiversity Net Gain Metric
We help you understand and apply the Biodiversity Net Gain Metric correctly explaining habitat distinctiveness, condition scoring, strategic significance and trading rules so your calculations are clear, defensible and planning-ready.
Factors Affecting Cost
Several factors influence the cost of BNG credits and biodiversity units, making pricing highly variable across different projects and locations. One of the primary drivers is habitat type and distinctiveness. High-value habitats such as ancient woodland, wetland, or species-rich grassland require more complex creation and management, resulting in higher biodiversity unit prices compared to lower-value habitats.
Location is another critical factor. Biodiversity units delivered close to the development site are generally preferred by local planning authorities and attract lower spatial risk multipliers within the Biodiversity Metric 4.0. As a result, locally available units may command a premium due to limited supply and increased demand.
Long-term management requirements also affect cost. All habitat banks must commit to at least 30 years of monitoring and maintenance, and the cost of delivering and managing habitats over this period is reflected in the price of biodiversity units. Legal security, including conservation covenants or Section 106 agreements, can further influence pricing by ensuring compliance and reducing risk.
Market dynamics, including supply and demand, play a significant role. In regions with limited habitat banks, prices may increase significantly. ACP Consultants helps clients navigate these variables, providing clear advice on cost drivers and identifying the most efficient and compliant route to achieving Biodiversity Net Gain.
Risks, Legal Agreements and Due Diligence
Purchasing or selling BNG credits involves long-term legal commitments. Buyers must ensure the credits are registered and managed according to Natural England standards, while landowners must guarantee habitat delivery for at least 30 years.
Key legal instruments include:
- Conservation covenants under the Environment Act 2021.
- Section 106 agreements with local planning authorities.
- Detailed Habitat Management and Monitoring Plans (HMMPs).
- Annual reporting obligations.
ACP provides comprehensive due diligence and liaises with solicitors to confirm the validity and transferability of units. This ensures that every credit transaction meets both planning and ecological requirements.
Why Work with ACP Consultants
ACP Consultants are specialists in Biodiversity Net Gain, BNG credits, and biodiversity units for sale, offering a comprehensive service that combines ecological expertise, planning knowledge, and market insight. Our role is to bridge the gap between developers and habitat bank providers, ensuring that all transactions are compliant with DEFRA and Natural England requirements.
We provide access to a nationwide network of verified habitat banks, allowing clients to source suitable biodiversity units efficiently. Each opportunity is subject to rigorous due diligence, including review of baseline data, habitat management plans, and legal agreements, ensuring that all units meet statutory standards and are fully defensible during planning.
Our team supports every stage of the process, from initial metric calculation and feasibility assessment to unit sourcing, legal coordination, and Biodiversity Gain Plan preparation. We also provide transparent advice on pricing, availability, and risk, helping clients make informed decisions that balance cost and compliance.
By working with ACP Consultants, developers benefit from a streamlined, audit-ready approach that reduces uncertainty and accelerates planning approval. Whether sourcing off-site units or navigating statutory BNG credits, we ensure that your project achieves measurable, policy-compliant biodiversity outcomes.
References and Useful Resources
- Defra & Natural England – Biodiversity Metric: Calculate the biodiversity net gain of a project or development
- Lichfield District Council – Biodiversity Net Gain (BNG) Guidance for Planning Applications
- East Devon District Council – How is Biodiversity Net Gain Measured?
- Defra (July 2025) – The Statutory Biodiversity Metric: User Guide
- North Hertfordshire District Council – How to Measure Biodiversity Net Gain
- Chartered Institute of Ecology and Environmental Management (CIEEM) – Biodiversity Net Gain Case Studies & Good Practice
- CIEEM – Biodiversity Net Gain Report and Audit Templates
- UK Statutory Instruments – The Biodiversity Gain Requirements (Exemptions) Regulations 2024
- Natural England – Habitat Management and Monitoring Plan (HMMP) Template (JP058)
- Defra – Biodiversity Gain Plan: Template and Guidance
- Defra – Guidance: Understanding Biodiversity Net Gain
- Natural England – Biodiversity Net Gain: Where to Start
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Frequently Asked Questions
Understanding how BNG credits and biodiversity units for sale work is essential for achieving compliance with the UK’s statutory Biodiversity Net Gain (BNG) requirements. For many developments, on-site delivery alone is not sufficient, meaning developers must secure off-site biodiversity units or, in some cases, statutory BNG credits.
This section answers common questions about buying BNG credits, sourcing biodiversity units, habitat banks, pricing, and legal requirements. It explains how the private market operates, when DEFRA statutory credits can be used, and what developers need to demonstrate within a Biodiversity Gain Plan.
We also address practical considerations such as availability, cost per unit, long-term management obligations, and how to secure compliant off-site solutions. Whether you are a developer, planning consultant, or landowner, these FAQs provide clear guidance on navigating the BNG credit market.
What are BNG credits?
BNG credits are measurable biodiversity values, calculated under DEFRA’s metric, used to offset habitat losses from development.
What’s the difference between BNG credits and biodiversity units?
BNG credits refer to government-issued statutory credits, while biodiversity units are privately created and traded through registered habitat banks.
How much do BNG credits cost?
Prices vary depending on habitat type, region, and market demand. While DEFRA’s statutory credits have fixed rates, private biodiversity units are priced by providers.
Can I buy BNG credits directly from DEFRA?
Yes, but only when no suitable market units exist. You must demonstrate this in your BNG Plan before purchasing statutory credits through Natural England.
What’s a habitat bank?
A habitat bank is a managed area of land where habitats are created or restored to generate biodiversity units for sale.
Who sells biodiversity units?
Landowners, environmental organisations, and habitat bank operators sell units registered on the Biodiversity Gain Site Register.
What is a BNG credit calculator?
It’s a DEFRA-issued tool that determines how many units are required for a given project, based on habitat area, condition, and distinctiveness.
Are BNG credits available near me?
ACP maintains a live register of BNG credits for sale near London, Birmingham, Manchester, and other regions, matching buyers to local habitat banks.
Can I sell BNG credits from my land?
Yes. Landowners can register enhancement projects as Biodiversity Gain Sites and sell generated units to developers.
How long do BNG credits last?
All credits are tied to a minimum 30-year management and monitoring commitment.
How can ACP Consultants help me source credits?
ACP acts as your BNG facilitator, connecting you to verified habitat banks, assessing legal and ecological risk, and ensuring compliance with Natural England’s standards.
How do I buy BNG units or off-site biodiversity credits?
To buy BNG units or off-site biodiversity credits, developers first calculate their residual biodiversity loss using the DEFRA metric, then approach verified habitat banks or facilitators such as ACP Consultants. We help identify available biodiversity units for sale, verify their registration, and ensure legal security through Section 106 or conservation covenants.
How are BNG credits priced per acre?
BNG credits per acre vary widely depending on the habitat created and its distinctiveness score. On average, one acre of high-value habitat such as woodland may generate several biodiversity units worth tens of thousands of pounds each. ACP provides indicative cost ranges and helps estimate total unit requirements using the official BNG credit calculator.
Can I register land for BNG and sell biodiversity credits?
Yes. Landowners can register land for BNG on the Natural England Biodiversity Gain Site Register. By enhancing habitats and meeting metric criteria, you can generate biodiversity units for sale or sell BNG credits to developers seeking off-site solutions. ACP supports landowners with feasibility studies, habitat management planning, and registration.
What determines the BNG market price?
The BNG market price depends on habitat distinctiveness, creation costs, location, and market demand. Regions with limited supply of suitable off-site units often attract higher prices. ACP tracks live BNG credits cost data and connects clients with cost-effective options near their development site.
Can I purchase biodiversity units directly from a habitat bank?
Yes. Developers can purchase biodiversity units directly from accredited habitat banks if the site is registered and supported by a legal agreement. ACP validates all offers and ensures compliance before any transaction, providing confidence that each unit meets the Environment Act 2021 obligations.
What are conservation credits and how are they used?
Conservation credits are similar to biodiversity units but may refer to broader ecological or carbon-linked offset markets. In the context of BNG, they describe the transferable ecological value generated by habitat creation or restoration. ACP helps interpret credit classifications to ensure correct use in planning submissions.
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- Last Updated:
- April 2026
Disclaimer: Our content is prepared by ACP Consultants’ in-house specialists and is based on current guidance, standards, and best practice in environmental consultancy. While we make every effort to keep information accurate and up to date, it is provided for general guidance only and should not be relied upon as a substitute for professional advice on specific projects. Planning authorities retain final decision-making powers, and requirements may vary between local authorities and over time. ACP Consultants accepts no liability for any loss arising from reliance on this content without obtaining tailored advice for your project.