Biodiversity Net Gain (BNG)

The root3 approach can help clients achieve Biodiversity net gain targets…


Sustainable development sits high on the political agenda which makes improving biodiversity a key driver for developers, land owners and local planning authorities alike. 


Biodiversity Net Gain (BNG) is an approach used to improve a sites biodiversity value. Once applied, on completion, a site will have a positive ecological impact, delivering improvements through habitat creation or enhancement after avoiding or mitigating harm.

What is Biodiversity Net Gain?

Biodiversity Net Gain (BNG) sits within the Environment Act.

The Act requires all development schemes in England to deliver a mandatory 10% biodiversity net gain to be maintained for a period of at least 30 years. The concept seeks measurable improvements for biodiversity by creating or enhancing habitats in association with development. Development proposals must “leave biodiversity in a better state than before”.

What does Biodiversity Net Gain mean for developers and land owners?

BNG means developers and land owners in England must ensure their projects deliver biodiversity improvements to meet the required 10% increase.

They must determine and evidence a project’s final BNG value using the specified Defra biodiversity metric if they want their plans to move through the planning process swiftly.

How do we achieve it through mitigation hierarchy?

To achieve biodiversity net gain, proposals must follow the ‘mitigation hierarchy’ which compels planning applicants to avoid harm in the first instance, then mitigate or finally compensate for losses on-site, off-site or through a combination of the two solutions. These measures will be required in planning conditions.


Get in touch to discuss your site and any questions you may have on Net gain.

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