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Ellis Clark8 Apr 20251 min read

Architect's Journal: Navigating Biodiversity Net Gain and Compliance

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Navigating Biodiversity Net Gain and Carbon Footprint Compliance

The architecture and development industry is seeing increasing sustainability regulations, with Biodiversity Net Gain (BNG) standards now mandated for planning application approvals, as well as ongoing pressure from customers and stakeholders to report the carbon emissions linked with building projects and organisational operations. To stay ahead, architects, developers and planners can integrate nature-positive strategies and low-carbon design into their projects.

Biodiversity Net Gain: the compliance challenge

BNG is now a mandatory requirement in England, requiring a 10% net gain in biodiversity post-development. While BNG assessments aid UK biodiversity conservation efforts, many in the industry face tight timelines and the need for ecological sign-off in order to secure planning permission.

How to meet BNG requirements:

• Baseline Habitat Survey: Assessing habitat types to establish a baseline biodiversity measurement.

• Biodiversity Hierarchy Analysis: Using the baseline survey to identify hedgerows, habitats and watercourses that can be saved and/or enhanced for conservation and enhancement strategies.

• Implementation: Developing custom BNG plans, including habitat restoration and sustainable land management.

• Ecologist Approval: Receiving approval from a qualified ecologist to achieve sign-off from the local council and gain planning permission.

Case study: Leicester College Abbey Park Campus

Moss Architecture Interiors Ltd required proof of a 10% biodiversity increase for a new training facility’s planning application. Tunley Environmental conducted an independent small site BNG assessment, incorporating a rain garden, native tree planting, and a neutral grassland mix into the design plans.

The project achieved a 21.11% increase in biodiversity units for area habitats and a 16.85% increase for hedgerows, far exceeding the required 10% and ensuring planning approval.

With expert-led assessments, architects can streamline compliance and incorporate sustainability from the ground up. 

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