Labour Must Reform Biodiversity Laws to Boost Housebuilding, Trade Body Says

Why It Matters

If unaddressed, BNG constraints could slow housing delivery, inflating prices and undermining the government’s housing‑supply commitments. Aligning biodiversity targets with realistic development costs is essential for sustainable growth.

Key Takeaways

• 84% of builders find BNG challenging
• SMEs face greater difficulty meeting biodiversity quotas
• BNG delays cause 60% to abandon potential sites
• Local councils lack resources for biodiversity assessments
• Recent reforms exempt projects under 0.2 hectares

Pulse Analysis

The Biodiversity Net Gain (BNG) policy, rolled out in 2021, obliges developers to leave new sites with at least a 10% improvement in ecological value. Designed to counteract habitat loss, the scheme dovetails with Labour’s ambitious promise to construct 1.5 million homes before the next general election. While the intent is laudable, the practicalities of measuring and delivering net gains have sparked friction with the construction sector, which argues that the added compliance layer inflates costs and extends planning timelines.

A Home Builders Federation survey reveals that 84% of respondents label BNG requirements as challenging, with small and medium‑size enterprises (SMEs) bearing the brunt. Nearly a third describe the targets as “very challenging,” and 60% admit the rules have deterred them from pursuing otherwise viable sites. The bottleneck is compounded by local authorities’ limited capacity to provide qualified biodiversity assessments, a shortfall cited by 80% of firms. Consequently, developers face uncertainty, higher upfront expenditures, and delayed project pipelines, eroding profitability and discouraging new starts.

The stakes extend beyond individual developers; persistent delays threaten the nation’s housing supply, potentially driving up prices and stalling economic recovery. Industry leaders call for calibrated reforms—such as broader exemptions for low‑impact projects and streamlined assessment processes—to balance ecological ambition with market realities. By refining BNG implementation, policymakers can preserve the scheme’s environmental benefits while unlocking the land needed to meet housing targets, ensuring both nature and the construction sector thrive.