EPC Ratings Explained (UK 2026)
Last updated 5 October 2026 · Prices based on the Ofgem price cap (October 2026 – December 2026)
An EPC estimates how much energy your home needs and what it costs to heat and light under standard assumptions. It's carried out by an accredited assessor and usually costs £60–£120.
EPC bands and SAP points
| Band | SAP points | What it typically means |
|---|---|---|
| A | 92+ | New-build with solar and heat pump |
| B | 81–91 | Modern, well-insulated home |
| C | 69–80 | Upgraded older home |
| D | 55–68 | UK average |
| E | 39–54 | Older home with some insulation |
| F | 21–38 | Poor insulation, old heating |
| G | 1–20 | Very inefficient |
What affects the cost
Insulation
Loft, walls and floors carry big weightings.
Heating system
Heat pumps score well; old boilers poorly.
Glazing
Double glazing adds points.
Renewables
Solar panels can add 5–10 points.
Lighting and controls
Low-energy lighting and smart controls help.
How to reduce the cost
- Look up your existing EPC on GOV.UK for free
- Read the recommendations page
- Gather evidence (e.g. insulation receipts) for the assessor
- Get a new EPC after upgrades
Frequently asked questions
How long is an EPC valid?
10 years.
How much does an EPC cost?
Typically £60–£120.
What is the average EPC rating in the UK?
Band D.
Can I check my EPC online?
Yes, on GOV.UK's 'Find an energy certificate' service.
Sources and methodology
Energy prices come from the Ofgem price cap for Direct Debit customers (GB average). Installation costs are typical UK ranges from installer quotes and industry guidance, rounded. Savings use today's rates and do not predict future prices.