Latest version: v2.0, November 2025
Guidance Note 38 (GN38) has been produced to help assist BREEAM Assessors relate the contents of drainage reports to the ‘Surface water run-off’ and ‘Minimising watercourse pollution’ criteria in Pol 03 for BREEAM UK New Construction 2018, V6/V6.1, and V7. The guidance note does not cover the criteria for ‘Flood resilience’.
Completing the template is optional. It is an aid for demonstrating compliance and not a requirement.
A separate template exists for BREEAM UK New Construction 2014 (see GN15).
View all Guidance Notes on BREEAM Projects (licensed assessors only)
27-Nov-2025 - Release of GN38 2.0
