Commercial EPCs are required for all non-domestic properties when you come to rent or sell them. The EPC will show the energy efficiency of the non-domestic dwelling, rating it between A-G with A being the best and G being the worst.
The commercial EPC takes into account the heating system as well as the fabric of the building, focusing on things like insulation, the type of glazing and also the age of the building. The seller or landlord must provide an EPC free of charge to the prospective buyer or tenant at the earliest opportunity
Visit the The GreenAge website for more information on Commercial EPCs