Every home offered for sale or rent in England and Wales must have an Energy Performance Certificate. Many buyers glance at the colourful chart and move on, but the rating quietly affects your running costs, your resale appeal and, for landlords, whether you can legally let the place at all.
How the scale works
The certificate grades a property from A, the most efficient, down to G, the least. The score reflects insulation, heating, windows and the like, and comes with an estimate of annual energy costs. It is valid for ten years, so the one on file may predate recent improvements and undersell a home that has since been upgraded.
Why the number matters
A poor rating signals draughty rooms and high bills, which buyers increasingly factor into their offers. A strong rating can be a genuine selling point as energy prices stay stubbornly high. For rented homes, the law sets a minimum standard, and properties below it cannot be let until improvements are made.
Lifting a low score
- Loft insulation cheap, quick, and one of the biggest single gains
- Draught-proofing sealing gaps around doors, floors and windows
- A modern boiler or heat pump a larger job with a lasting effect
- Low-energy lighting small on its own but it nudges the score
Getting a fresh assessment
If you have made improvements, commission a new certificate before you market the property so buyers see the better figure. An accredited assessor visits, measures the relevant features, and lodges the result on the national register. The cost is modest, and a jump of one or two bands can pay for itself in the impression it makes.