Follow the link at the bottom to a great article from CIBSE Journal.
In summary, use an experienced Non Domestic EPC assessor and thoroughly investigate all key EPC inputs to avoid using defaults (and therefore achieve best possible EPC ratings) for Minimum Energy Efficiency Standards (MEES) – with added benefit if it is modelled in Level 5 DSM software.
Funnily enough, Coles Knapp are highly experienced assessors qualified to Level 5 and use IES VE DSM as well as the highly respected Designbuilder software, so if you want to minimise MEES misery, call us…