Epc BirminghamEnergy Performance Certificate (EPC) 
An Energy Performance Certificate (EPC) is a report that assesses the energy efficiency of a property and recommends specific ways in which the efficiency of your property could be improved.
If you do not have a copy of an EPC for your property, you may be able to access a copy online, if one already exists. If you are in England or Wales, you can enter your postcode into the Landmark register. To check whether an EPC already exists for a property in Scotland see the Scottish EPC Register.
An EPC reference number is required as part of the application process for the Domestic RHI. The EPC is used to:
determine whether the property can be considered domestic

evidence that the required loft and cavity wall insulation measures have been installed.

determine the heat demand figure used for the payments calculation for non-metered biomass and heat pump applicants.

The heat demand figure is only included in EPCs for dwellings. A non-domestic EPC would not show this figure and therefore could not be used to work out payments using the deeming methodology. Your EPC must include a heat demand figure (some older EPCs don’t have this). If yours doesn’t, you will need to get one that does.
An EPC is produced whenever a Green Deal assessment is carried out.Therefore if your property is already adequately insulated, you will only need the EPC that is provided in the Green Deal Advice Report (GDAR). However, if your EPC states that either loft or cavity wall insulation are required you must get an assessor to produce a second EPC after installing the insulation to prove that you have done this. Often your Green Deal assessor will be able to provide this service, however a list of Domestic Energy assessors is available at: https://www.gov.uk/find-an-energy-assessor. 
The Green Deal Assessment requirement applies to everyone except custom-builders with eligible new-builds, Registered Social Landlords (RSLs) and Local Authorities.
 Eligible new-build properties constructed by custom-builders still need a domestic EPC.

 RSLs and Local Authorities need to provide either an EPC that is less than 24 months old from application or a GDAR. The application deadline for legacy RSL applicants is still 8 April 2015.