Energy consumption and carbon emissions of untreated spaces

Where the assessment contains a mix of treated and untreated spaces, untreated spaces can be excluded and the performance based on the treated spaces only. Where the entire assessment is untreated, the whole of the structure(s) must be assessed on the basis that this issue is critical for certification.

BREEAM is primarily designed to assess permanent, treated and occupied structures.
Untreated structures are unlikely to gain many credits when being assessed.