Experts Warn BNG Rollback Threatens Investment and Nature

Leading experts in environment and property are sounding the alarm over proposed government plans to significantly weaken Biodiversity Net Gain (BNG) requirements. An open letter reveals deep concern following reports that the Treasury intends to exempt development sites under one hectare (approximately 2.47 acres) from mandatory BNG contributions. This potential policy reversal has sparked widespread criticism, with warnings of severe negative impacts on both ecological preservation and investor confidence in sustainable development.

Currently, BNG mandates that developers must deliver a 10% net gain in biodiversity as part of their projects, ensuring that new developments leave the natural environment in a measurably better state than before. The reported change would see this crucial requirement scrapped for smaller sites. While individually these sites might seem minor, collectively, they represent a significant portion of new developments and land-use change. Removing BNG for these parcels could create a loophole, allowing widespread incremental biodiversity loss that contradicts the UK’s environmental commitments and sustainability goals.

The implications of such a rollback are profound. From an environmental perspective, it would inevitably lead to further habitat degradation and species decline, undermining efforts to reverse nature loss. Economically, experts warn of a "severe" impact on investment. Developers who have already integrated BNG into their planning and financial models for sustainable projects might see reduced incentive, while the overall market could lose its competitive edge in green infrastructure. This move risks signaling a lack of commitment to environmental standards, potentially deterring responsible investors and tarnishing the UK's reputation as a leader in green development. Ultimately, rolling back BNG is a short-sighted decision that jeopardizes both our natural capital and long-term economic prosperity.