EPC is displayed in a similar way to that of a domestic property, with the energy rating shown on an A-G scale. As with a domestic EPC, a commercial EPC is valid for 10 years. The EPC must be provided by the seller or landlord at the earliest opportunity. Before a building is put on the market the seller or landlord must commission an EPC for the building.
When a dwelling is created via new construction, conversion or change of use of an existing building, a full SAP Energy Certificate is required, but for existing domestic properties a reduced SAP (RdSAP) EPC is created. (Newly constructed after 6th April 2008).