DEFRA Small Sites Metric (SSM)

The Small Sites Metric (SSM), the simplified version of the DEFRA Biodiversity Metric 4.0, cannot be used as a means of assessing Biodiversity Net Gain in BREEAM.

We will consider accounting for the SSM in future versions of all BREEAM Schemes.

The calculation methodology in GN36 is based on the full version of the DEFRA Biodiversity Metric.