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Biodiversity Net Gain
Enabling development make a positive impact on nature, on and offsite. We support you create & improve places for people & wildlife.
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What is Biodiversity Net Gain?

DEVELOPMENT THAT LEAVES BIODIVERSITY IN A BETTER STATE THAN BEFORE.

In terms of planning policy Biodiversity Net Gain seeks to reverse natures' decline across England (and beyond). It places a requirement on developers to increase biodiversity levels in measurable units for a defined area of land, to secure planning permission.

Most Local Planning Authorities already request development to demonstrate positive outcomes for nature, however the new Environment Bill proposes making Biodiversity Net Gain of 10% mandatory for nearly all new development.

1

Field survey to collect pre-development habitat information.

2

Desktop study using proposed development landscape plans to gather post-development habitat information.

3

Review any offsite compensation (or Gain) site plans.

4

Use pre and post development information (including offsite) to run the biodiversity metric to ascertain Biodiversity value.

5

The Biodiversity Metric output will be either a Gain or loss for biodiversity and expressed as a percentage.

Calculating Biodiversity

A Biodiversity Net Gain Assessment compares the pre-development baseline conditions to post development plans. It uses a spreadsheet calculator known as the Biodiversity Metric to convert habitats into biodiversity units which have a monetary value ascribed to them.

Assessment Process:

  1. Undertake field survey to collect pre-development habitat information 
  2. Desktop study to:
    1. Review proposed development landscape plans to gather post-development habitat information
    2. Set strategic context using relevant local, regional & national plans
  3. Review any offsite compensation (or Gain) site plans for habitat creation/enhancement information
  4. Use pre & post development information to run the Biodiversity Metric which will convert habitats into Biodiversity units
  5. The Biodiversity Metric output will be either a gain or loss for biodiversity expressed as a percentage

Should a biodiversity loss or a too low gain be calculated then consultation to refine the landscape plans will be required until an acceptable level of Net Gain can be achieved. 

If this isn't possible then a compensatory payment may be agreed and which is commensurate with the value of the biodiversity units lost. It's worth noting that although this has not been set yet costs attributed so far are between £9,000 to £15,000 per unit. Most are applying an average of £11,000 per biodiversity unit.

Net Gain should be achieved on a permanent basis, with the requirement for compensatory habitats to be actively managed for 30 years.

Supporting You to Success

If your development needs planning permission Biodiversity Net Gain requirements will have an impact on your project. 

We offer the following services to enable your development be a positive one for you and biodiversity:

STRATEGIC NET GAIN ASSESSMENT 

Desktop study used to inform land purchase decisions and factor in costs and income opportunities that Biodiversity Net Gain can present.

BIODIVERSITY NET GAIN ASSESSMENT 

Field survey & Biodiversity Metric calculations.

CONSULTATION 

Stakeholder engagement to maximise the opportunities for biodiversity and your development.

NET GAIN DESIGN SERVICES 

Landscape architect design services specialising in increasing biodiversity value of development both on and offsite.

MANAGEMENT PLANS

For onsite mitigation and onsite/offsite compensation schemes.

BIODIVERSITY VALUE FOR MONEY ASSESSMENTS

Independent evaluation of major construction and/or infrastructure projects with respect to delivering Value for Money biodiversity gains in accordance with HM Treasury's Green Book  guidance.

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