Energy Performance Certificates
An EPC provides a rating so that comparisons on energy performance can be made between different properties. They are generated by a standard form of modelling software which does not always correspond to actual performance. Recent research has shown this can significantly underestimate thermal performance in older buildings.
As such ratings may lead to inappropriate recommendations which could harm the character or risk deterioration of such buildings, Historic England has developed guidance to raise awareness of the issues.
An EPC is required when a property is built, sold or rented and is valid for ten years.
Listed buildings along with certain other types of building are exempted from requiring an EPC.
For further information visit the Government page on EPCs.