| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £147 | 0.2 yrs | +3.4 pts |
| Draughtproofing | — | £80 – £120 | £145 | 0.7 yrs | +3.4 pts |
| Floor insulation | — | £800 – £1,200 | £172 | 5.8 yrs | +4.0 pts |
| High-retention storage heaters | — | £2,000 – £3,000 | £340 | 7.4 yrs | +7.9 pts |
| Cavity wall insulation | — | £500 – £1,500 | £129 | 7.8 yrs | +3.0 pts · reaches F |
| Solar water heating(optional, beyond F) | — | £4,000 – £6,000 | £134 | 37.4 yrs | +3.1 pts |
| Solar photovoltaic panels(optional, beyond F) | — | £5,000 – £8,000 | £160 | 40.7 yrs | +3.7 pts |
| Double glazing(optional, beyond F) | — | £3,300 – £6,500 | £62 | 50+ yrs | +1.5 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 £933 a year — a 20.2% annual return on £4,623.
Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.
Sold prices
Estimated today: £135,512 HPI-indexed estimate, not a valuation
Gambrel Grove: 16 sales since 1995 · £187,667 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Oasis Academy Broadoak | Primary | 0.2 mi | — |
| Canon Burrows CofE Primary School | Primary | 0.4 mi | — |
| Waterloo Primary School | Primary | 0.4 mi | — |
| Dixons Ashton Academy | Secondary | 0.6 mi | Progress 8 -0.56 · well below average (2023/24) |
| St Damian's RC Science College | Secondary | 0.9 mi | Progress 8 +0.24 · above average (2023/24) |
| Laurus Ryecroft | Secondary | 1.5 mi | Progress 8 +0.73 · 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.
Gambrel Grove
How this home sits against its street.