EPC Ratings Explained: What Every UK Homeowner Should Know

An Energy Performance Certificate (EPC) rates your home’s energy efficiency from A (most efficient) to G (least efficient). It is produced by a qualified assessor who visits your property and records details about insulation, heating, glazing, lighting, and renewable energy systems.

The certificate shows your current rating and a potential rating that could be achieved with recommended improvements. It is valid for 10 years.

You need a valid EPC when:

• Selling your home — Required by law before marketing. • Renting your home — Minimum E rating required for new tenancies (likely to increase to C by 2030). • Applying for the BUS grant — A valid EPC is mandatory for heat pump grant applications. • Certain council schemes — ECO4 and GBIS require an EPC.

If you do not have a current EPC, we can arrange one as part of our service.

Installing renewable energy systems can dramatically improve your EPC rating:

• Air source heat pump: Can improve your rating by 10–20 SAP points, often enough to jump one or two bands (e.g., D to C or B). • Solar panels: Typically add 5–15 SAP points depending on system size. • Both combined: Many homes move from D/E to B/C, which is significant for future regulations and property value.

A better EPC rating also makes your property more attractive to buyers and can add 5–10% to its value, according to various property market studies.