
Planning Applications and Biodiversity Net Gain: The Legal Role of Schedule 7A
As mandatory Biodiversity Net Gain (BNG) reshapes the planning landscape in England, the legal role of Schedule 7A within the Town and Country Planning Act 1990 has become pivotal. Schedule 7A establishes the biodiversity gain condition that governs how and when BNG must be secured. Understanding Schedule 7A and the Biodiversity Gain Condition Schedule 7A introduces the biodiversity gain condition, a legal requirement that must be met before a planning authority can lawfully approve most development applications. This condition applies to developments in England, and it requires: A minimum 10% increase in biodiversity compared to the site’s pre-development baseline. A Biodiversity Gain Plan is to be submitted and approved after planning permission is granted, but before development begins. Use of the Statutory Biodiversity Metric to calculate baseline and post-development habitat value. While broad BNG intentions are often considered during planning applications, the formal Biodiversity Gain Plan is a post-consent requirement under Schedule 7A. It must demonstrate clearly how the biodiversity uplift will be delivered. The Biodiversity Gain Hierarchy and Delivery Options Schedule 7A supports the delivery of BNG through a defined biodiversity gain hierarchy. On-site enhancements within the red-line boundary. Off-site biodiversity units are secured via legal agreements. Statutory biodiversity credits are used only as a last resort. This hierarchy is separate from, but works alongside, the mitigation hierarchy, which governs impact management: avoid, minimise, restore, and compensate. Where off-site units are used, they must be registered on the Biodiversity Gain Site Register and secured through mechanisms such as Section 106 agreements or conservation covenants. This ensures that biodiversity enhancements are legally binding and actively managed for at least 30 years. Long-Term Security: Legal Agreements and Covenants To satisfy Schedule 7A’s requirements, biodiversity enhancements must be maintained well beyond the construction phase. This is where conservation covenants and planning obligations (such as Section 106 agreements) play a critical role. They legally secure the land for biodiversity purposes. They tie habitat management responsibilities to the land title. They enable LPAs or responsible bodies to enforce compliance over time. These tools give confidence to both planning authorities and developers that BNG will be delivered reliably and transparently. Integrating BNG into the Planning Process Although the Biodiversity Gain Plan is submitted after planning permission is granted, developers must consider BNG early in the planning process. LPAs will expect baseline surveys and initial metric calculations to accompany applications and, in some cases, draft calculations (i.e. for major developments) A robust BNG strategy should: Include the baseline habitat value and proposed uplift. Outline potential on-site gains and identify if off-site units will be required. This early integration helps ensure smoother validation and faster decision-making and reduces the risk of post-consent delays. Irreplaceable Habitats and Higher Standards Schedule 7A explicitly states that BNG cannot be used to justify the loss of irreplaceable habitats. These habitats, such as ancient woodland, require bespoke mitigation and compensation. Where development affects priority habitats or land identified in LNRS, higher ecological standards and more rigorous scrutiny are expected. In such cases, applicants will need to provide clear justification for any residual impacts. Legal Compliance and Commercial Opportunity Meeting the biodiversity gain condition is not just about avoiding refusal. It also creates an opportunity. For developers, it unlocks planning consent and avoids costly delays or enforcement action. For landowners, Schedule 7A provides a framework to: Create habitat banks that generate biodiversity units. Generate long-term income through BNG delivery. By understanding the legal requirements and securing land through appropriate legal agreements, land managers can supply registered biodiversity units to meet growing market demand. How Civity Supports BNG Delivery under Schedule 7A At Civity, we support clients across the planning and ecology spectrum. Reviewing your statutory biodiversity metric and calculating the unit numbers and types you need Helping you to prepare your BNG plan Supporting phased and complex schemes with ongoing advisory support. We also help landowners bring suitable land into the BNG market by assessing deliverability, aligning with local policy, and brokering biodiversity units to developers in need. Schedule 7A as a Catalyst for Nature Recovery. Schedule 7A represents a legal turning point in how planning permission and environmental enhancement are linked. It transforms BNG from a policy ambition into a statutory obligation that is measurable and enforceable. By embedding biodiversity improvements into the planning system and requiring them to be secured for decades, Schedule 7A enables developers, landowners, and planners to contribute to long-term nature recovery. With expert guidance and early planning, BNG can be delivered not just compliantly but meaningfully.