| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £221 | 0.1 yrs | +7.8 pts · reaches F |
| Low energy lighting | — | £40 | £11 | 3.5 yrs | +0.4 pts |
| Floor insulation | — | £800 – £1,200 | £258 | 3.9 yrs | +9.2 pts |
| Cavity wall insulation | — | £500 – £1,500 | £193 | 5.2 yrs | +6.8 pts · reaches E |
| Change of heating system | — | £3,000 – £7,000 | £737 | 6.8 yrs | +26.2 pts · reaches D |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £239 | 18.8 yrs | +8.5 pts · reaches C |
| Solar water heating | — | £4,000 – £6,000 | £200 | 24.9 yrs | +7.1 pts · reaches B |
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 £1,860 a year — a 11.2% annual return on £16,563.
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: £60,549 HPI-indexed estimate, not a valuation
Windsor Grove: 52 sales since 1995 · £77,418 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Oxford Grove Primary School | Primary | 0.3 mi | — |
| St Joseph's RC Primary School, Halliwell, Bolton | Primary | 0.3 mi | — |
| Brownlow Fold Primary School | Primary | 0.4 mi | — |
| Eden Boys' School, Bolton | Secondary | 0.7 mi | Progress 8 +0.45 · above average (2023/24) |
| Smithills School | Secondary | 0.9 mi | Progress 8 -0.04 · average (2023/24) |
| University Collegiate School | Secondary | 0.9 mi | Progress 8 -0.98 · well below 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.
Windsor Grove
How this home sits against its street.