Checking the authenticity of an Energy Performance Certificate
An EPC should be properly recorded, by the energy assessor, in the central register for non-dwellings which contains all EPCs. An EPC is identifi ed by a unique reference number that relates only to your premises. If you have commissioned an EPC for your building you will receive [...]

What contributes to the energy performance of a building
The energy rating of a building is a complex calculation that is based on a combination of factors. The key factors are:

The type of construction of the building (including walls, roofs, floors and glazing)

Whether parts (zones) of the building are used for different purposes eg office, [...]

Providing information to prospective buyers and tenants
A valid EPC and recommendation report must be made available free of charge by the seller or landlord to a prospective buyer or tenant when non dwellings are sold or let. This must be at the earliest opportunity and no later than:

When any written information about the building [...]

Responsibilities for providing an EPC on construction or modification of a non-dwelling

When a building being constructed is physically complete, it is the responsibility of the person carrying out the construction to give an EPC and recommendation report to the building owner and to notify Building Control that this has been done. Building Control will [...]

What is an EPC and what does it mean?
The EPC looks broadly similar to the energy labels now provided with vehicles and many household appliances. Its purpose is to indicate how energy efficient a building is. The certificate will provide an energy rating of the building from A to G, where A is very efficient [...]

Why energy performance certificates are require?
An Energy Performance Certificate (EPC) is intended to inform potential buyers or tenants about the energy performance of a building, so they can consider energy efficiency as part of their investment or business decision to buy or occupy that building.
An EPC will provide an energy rating for a building which [...]