Band C now required for new tenancies
EPC Upgrade Cost Calculator
Estimate how much it'll cost to get your property to EPC Band C. Based on average UK contractor rates 2026.
ESTIMATED UPGRADE COST TO BAND C
£0
Range: £0 - £0
Cost of NOT upgrading:
£30,000 fine
Cost of upgrading:
£0
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Get Pro — £49/mo →EPC Upgrade Costs 2026: What to Expect
The average cost to upgrade a property from Band D to Band C is £3,000-£8,000, depending on property type and current energy efficiency measures.
Common upgrades and typical costs:
| Upgrade | Typical Cost | EPC Points |
|---|---|---|
| Loft insulation (270mm) | £300-£600 | +5-10 |
| Cavity wall insulation | £500-£1,500 | +10-15 |
| New condensing boiler | £2,500-£4,000 | +10-20 |
| Double glazing (full house) | £4,000-£8,000 | +5-10 |
| LED lighting | £100-£300 | +3-5 |
| Smart thermostat | £200-£400 | +2-4 |
| TRVs on all radiators | £150-£400 | +2-3 |
| External wall insulation | £8,000-£15,000 | +15-25 |