Th EPC inspection process involves a full walk-through of the property and requires access to all areas, including every room, the loft, boiler, hot water systems, and energy meters. This is necessary to collect the data required under RdSAP 10 and to ensure the final rating is accurate and compliant.

The visit is non-invasive so the assessor will not be drilling walls, lifting floor boards, or opening boiler casings as part of the process. The visit should cause minimal disruption to the occupier, and the building. The assessor won’t carry out any work or alterations, but they will need clear access to inspect walls, measure windows, assess heating controls, and evidence any insulation where visible. If access to areas like the loft hatch or boiler cupboard is blocked, this may affect the assessment, as either, assumptions have to be made, or the assessor may have to arrange to visit again once the access has been cleared.

Having paper work to clarify details around solar PV systems, window installation dates and cavity wall insulation can be beneficial.

In most cases, the assessment takes between 45 and 90 minutes depending on the property’s size and complexity. Being prepared and allowing easy access helps the visit run smoothly.

You can read more about the EPC inspection process here.