| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Cavity wall insulation | — | £900 – £1,500 | £110 | 10.9 yrs | +3.0 pts · reaches C |
| Floor insulation(optional, beyond C) | — | £5,000 – £10,000 | £148 | 50+ yrs | +4.0 pts |
Grants verified 20 August 2026. Costs are the register’s indicative ranges. Savings are restated at the fuel prices assumed in July 2026. Points per measure are estimated from 19.9 million certificates and rescaled to this home’s own certificate delta; the total is the register’s figure.
Running costs
£1,104
per year at grade D
£846
per year at grade C
The full plan saves £110 a year — a 9.2% annual return on £1,200.
Energy costs as modelled on the certificate, not a bill.
Sold prices
No sale recorded for this address since 1995.
Billet Lane: 101 sales since 1995 · £382,680 average over 10 years
Schools nearby
No school in the register within reach of this postcode.
Billet Lane
How this home sits against its street.
78
graded homes
69.4
average score
C
most common grade
-2.4
this home vs street