What’s involved? In order to create a domestic EPC, we will need to carry out an inspection at your property. We take floor and ceiling measurements; building age and type of construction including any wall insulation; roof construction and insulation; details of the heating & hot water systems and their respective controls; type of windows; type of lighting. In order to properly include all of the elements at the property and to provide you with an accurate certificate, we need either photographic or documentary evidence of elements installed. For instance, sometimes we can not access a loft space to view the insulation. In these cases, we would revert to the approximate age of the property and the Building Regulations at that time. Unless the homeowner or landlord can provide a receipt or other similar documentation to prove that insulation has been installed.