The UK’s Biodiversity Net Gain market is forecast to approach £100m in value this year, as habitat allocations and observed transaction activity give the planning obligation a more visible commercial structure.
New market data indicates that registered BNG allocations and transaction activity are set to reach about £93m in 2026, almost triple the £33m figure recorded in 2025. The increase reflects the growing role of offsite biodiversity units, habitat banks, and nature-positive land management in the development process.
Biodiversity Net Gain requires most new developments in England to deliver a measurable uplift in biodiversity, generally set at a minimum 10% gain. Developers can deliver gains onsite, offsite, or through statutory biodiversity credits where other options are not available. The policy is intended to embed nature recovery into planning and ensure that development leaves habitats in a better condition than before.
The emerging market is attracting attention from developers, landowners, planning consultants, ecologists, investors, and sustainability teams. Land that can generate biodiversity units may carry new commercial value, while developers need to price biodiversity obligations earlier in site appraisal, planning risk, and viability modelling.
Nature-related finance is also gathering momentum in other parts of the market. The Lloyds-backed regenerative farming fund aims to reward farmers for verified improvements in biodiversity, soil health, water quality, and carbon, while the ISSB’s work on nature metrics is drawing biodiversity into corporate reporting. BNG adds a planning and land-value mechanism to that wider financial and regulatory context.
Developers face a timing challenge. Biodiversity requirements can affect land acquisition, masterplanning, planning consent, construction phasing, and exit values. If biodiversity obligations are assessed late, they can create unexpected cost, redesign, or delay. If they are priced early, they become part of normal development economics alongside utilities, transport, remediation, affordable housing, and community infrastructure obligations.
For landowners, the opportunity is more complex than simply selling biodiversity units. Habitat creation and enhancement require long-term management, monitoring, legal commitments, and ecological credibility. Revenue may arrive earlier than the obligation to maintain the habitat, creating a need for careful financial planning and governance over decades.
Investors are likely to watch the market closely. Nature markets can offer long-term cash flows, but they bring policy, measurement, delivery, and reputational risks. The credibility of biodiversity units depends on whether habitats are genuinely created, enhanced, and maintained. If the market grows faster than confidence in monitoring, it could attract criticism from environmental groups and planning authorities.
The policy also connects with the government’s wider housing and infrastructure ambitions. BNG adds cost and complexity to development, but it gives planning authorities a structured route to require nature improvements. The balance between ecological integrity and development viability will shape how quickly the market matures.
The forecast £93m valuation suggests BNG is gaining financial depth beyond early compliance activity. Its next phase will depend on transparency, high-quality ecological delivery, credible registries, local planning capacity, and evidence that biodiversity gains are not only traded but achieved on the ground.
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