Measuring ecological change – Using Defra Metric 3.0 and 3.1

Defra Metric 3.0 and 3.1 has been mapped to the BREEAM Change in Ecological Value Calculator and can be used in assessments for BREEAM UK New Construction 2018, BREEAM Infrastructure Version 6 (formerly CEEQUAL Version 6), and Home Quality Mark ONE.

Please see the table below for the applicable benchmarks where Defra Metric 3.0 or 3.1 is used. The benchmarks from the Defra Metric are taken from the lowest score from the three metrics (Habitat, Hedgerow, River).

Metric result Credits awarded
BREEAM (GN36) Defra Metric (3.0, 3.1) BREEAM UK NC 2018 HQM ONE BREEAM Infrastructure V6
Less than 75% Less than -25% 0 0 0
Between 75% and 94% Between -24% and -6% 1 2 10
Between 95% and 104% Between -5% and 4% 2 4 20
Between 105% and 109% Between 5% and 9% 3 6 30
110% and above 10% and above 3 + 1 exemplary level credit 8 40

 

03 Mar 2022 - Updated to clarify how Defra Metric 3.0 can be applied to current schemes
27 May 2022 - Updated to Defra Metric 3.1
21 Sep 2022 - Clarification on the figure to use from Defra Metric 3.0 or 3.1
14 Oct 2022 - Updated following rebrand of CEEQUAL to BREEAM Infrastructure