Energy Performance Certificates (EPCs)

Properties are rated from A to G, with A being the most energy efficient and G the least. The certificate also shows the property's potential rating if recommended improvements were made.

The assessment considers features including property construction, insulation, windows, heating, hot water, lighting and renewable technologies. These are used to calculate the property's energy performance.

Usually, yes. An EPC generally requires a physical assessment of the property so the assessor can gather the information needed to produce the certificate.

An EPC is generally valid for 10 years, although you can choose to have a new assessment carried out sooner if significant improvements have been made to the property.

An EPC is commonly required when a property is built, sold or rented. There are some exemptions, depending on the property and circumstances.

Yes. Existing certificates for properties in England, Wales and Northern Ireland can be searched online, while Scotland has its own EPC register.

Your existing EPC remains valid until it expires, but it won't automatically update to reflect later improvements. You can have a new EPC assessment carried out if you want those changes reflected in an updated certificate.