| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Draughtproofing | — | £150 – £250 | £193 | 1.0 yrs | +4.8 pts |
| High-retention storage heaters | — | £1,200 – £2,400 | £451 | 4.0 yrs | +11.1 pts · reaches C |
| Shower heat recovery | — | £600 – £1,500 | £38 | 27.9 yrs | +0.9 pts |
| Solid wall insulation | — | £7,500 – £11,000 | £248 | 37.3 yrs | +6.1 pts · reaches B |
| Double glazing(optional, beyond B) | — | £4,500 – £6,000 | £83 | 50+ yrs | +2.0 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
The full plan saves £930 a year — a 7.6% annual return on £12,300.
Energy costs as modelled on the certificate, not a bill.
Sold prices
Estimated today: £241,419 HPI-indexed estimate, not a valuation
Fore Street: 151 sales since 1995 · £316,755 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Abel Smith School | Primary | 0.2 mi | — |
| Mill Mead Primary Academy | Primary | 0.3 mi | — |
| Simon Balle All-Through School | All-through | 0.4 mi | Progress 8 +0.45 · above average (2023/24) |
| Richard Hale School | Secondary | 0.2 mi | Progress 8 +0.31 · above average (2023/24) |
| The Sele School | Secondary | 1.1 mi | Progress 8 -0.26 · below average (2023/24) |
| The Chauncy School | Secondary | 1.9 mi | Progress 8 +0.53 · well above average (2023/24) |
Schools from the DfE register, performance from the KS4 performance tables. Progress 8 is a GCSE measure, so primaries have none. Distance is straight-line from the postcode, not a catchment: admission is decided by the school, not by us.
Fore Street
How this home sits against its street.