What is an EPC?
An EPC is an official report that can only be provided by a qualified and accredited Domestic Energy Assessor (DEA). The purpose of the report is to record how energy-efficient a property is and this enables prospective buyers and/or tenants to compare one property against another using 'standard occupancy'. The EPC includes a graph which illustrates the rating of the property from A to G, where A is very efficient and G is very inefficient.
There are two graphs on the EPC - one illustrating the energy efficiency rating and one illustrating the environmental impact of the property.

The energy-efficiency rating is a measure of a home's overall efficiency. The higher the rating, the more energy-efficient the home is, and the lower the fuel bills are likely to be. The environmental impact rating is a measure of a home's impact on the environment in terms of carbon dioxide (C02) emissions - the higher the rating, the less impact it has on the environment.
Each rating is based on the performance of the building itself and its services (such as heating and lighting), rather than the domestic appliances within it. This is known as an asset rating. The certificate also lists the potential rating of the building if all the cost-effective measures were installed.
The ratings will vary according to the age, location, size and condition of the building. The potential rating on the certificate will take these factors into account, and the suggested measures will be tailored so that they are realistic for the particular building.
Do I need an EPC?
EPCs were first introduced in July 2007 and, after a staggered start, they are now required for all domestic properties that are marketed for sale or rent. It is up to the property owner to comply with the regulations which state that an EPC must be made available to prospective buyers within 28 days of going on the market. If you do not comply with the regulations, trading standards can fine you up to £100 per day.
Click here to view a sample EPC.