Net gain

Closes 10 Feb 2019

Key evidence gaps

We would welcome further evidence that addresses the following identified evidence gaps. Please submit evidence, or related enquiries, below or to netgainconsultation@defra.gsi.gov.uk.

Evidence gap

What we would like from you

Transition and ongoing delivery costs to central (e.g. Defra, Natural England) and local government (e.g. LPAs).

Evidence of how much a biodiversity net gain approach costs to implement. We are aware of evidence from the biodiversity offsetting pilots, but these costs included development of the approach and spatial strategies which are now better understood.

Interactions with other contributions such as Section 106 and Community Infrastructure Levy.

Evidence of whether a biodiversity net gain requirement would affect wider developer contributions.

If so, how significant would this effect be?

Distributional impacts of net gain on viability.

Will a mandatory biodiversity net gain requirement affect some types of development disproportionately?

Recent trends in habitat loss and gain due to development, likely habitat under threat due to future development, and expected habitat delivery though net gain.

What types of habitat are typically lost through development?

Is development typically achieving no net loss of biodiversity, and is performance improving?

Further detail on costs to small and large developers and developments, including familiarisation costs and impact of tariff.

Are there any further costs or benefits not identified in this document or the accompanying Impact Assessment? Please provide evidence of these costs or benefits.

The impact of biodiversity net gain delivery for

  • commercial development;
  • public sector development;
  • industrial development; and
  • local infrastructure development

To what extent do these development types already achieve net gains, or no net loss of biodiversity, and is performance improving?

What is the typical habitat type and condition on these sites and how does this differ from other types of development (i.e. residential)?

Is there typically a greater net negative impact on habitats through development of these types, resulting in greater costs for net gain?

Net gain interactions with on-site delivery of housing and other green infrastructure (e.g. parks, recreation)

Will biodiversity net gain negatively or positively affect the quality of green space for recreation and enjoyment within new developments?

Whether net gain approaches, where adopted, help to speed up and/or unlock development in previously borderline sites.

Can you provide examples of where net gain has helped to expedite, or has delayed, planning processes?

Can you provide examples of where a net gain approach has unlocked development that would otherwise be unacceptable (e.g. by mitigating or compensating for otherwise unacceptable impacts, or by achieving local support), or prevented development that might otherwise have proceeded?

 

G. We would welcome further evidence that addresses the following identified evidence gaps. Please submit evidence, or related enquiries, below or to netgainconsultation@defra.gsi.gov.uk.