Baker Consultants

Biodiversity Net Gain

BNG calculation, creation and management

Biodiversity Net Gain (BNG) is the requirement for most new developments to deliver net gains for wildlife. After the Environment Bill was granted Royal Assent on Tuesday 9 November 2021, it has become a legal requirement for developments to secure a 10% net gain. BNG is calculated using the DEFRA Metric 3.0 which takes a measure of the current biodiversity of the site and calculates the scale of habitat creation that will be required to balance that loss plus a ten per cent increase.

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What's the cost?

BNG is one of the most significant changes in wildlife law in the last 30 years and will create a new market in biodiversity ‘units’. Measuring and securing BNG requires expert ecological knowledge firstly to measure the value on site but then to work out how the required 10% gains can be achieved and delivered.

Successful BNG delivery often requires detailed negotiation with the planning authority or other third parties. Delivery of BNG can be very costly. A small residential development of 70 units may require the delivery of 10 biodiversity units to compensate for the loss and with an estimated cost of at least £11,000 per unit it pays to plan ahead and work out at the beginning of each project how and where BNG will be delivered. BNG has been trialled at a number of local authorities over the last five years and whilst a ten per cent net gain has been settled on the cost of BNG units varies wildly, some up to £45,000.

Biodiversity Net Gain

Why Baker Consultants?

Baker Consultants has a long track record of BNG delivery with some projects having been tested at public inquiry. We have considerable expertise in baseline assessment and minimising the cost of BNG delivery. In one case we saved the developer £500,000 simply by looking at alternative ways of delivering BNG.

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Our services

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Species and Habitat Surveys

Wildlife is not a barrier to development.

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Habitat Regulations Assessments

Our team of highly skilled ecology consultants has a reputation for innovation...

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Land acquisition

Understand the ecological constraints of your development site.

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Environmental Impact Assessments

No planning without EIA.

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Preliminary Ecological Appraisal

A first look at your development site.

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Planning submission/Public inquiry

Ecologists form part of your development planning and public inquiry team.

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