| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £251 | 0.1 yrs | +7.5 pts · reaches F |
| Loft insulation | — | £100 – £350 | £140 | 1.6 yrs | +4.2 pts |
| Low energy lighting | — | £30 | £13 | 2.3 yrs | +0.4 pts |
| Cavity wall insulation | — | £500 – £1,500 | £219 | 4.6 yrs | +6.5 pts |
| Change of heating system | — | £3,000 – £7,000 | £837 | 6.0 yrs | +24.9 pts · reaches D |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £271 | 16.6 yrs | +8.1 pts · reaches C |
| Floor insulation | — | £4,000 – £6,000 | £293 | 17.1 yrs | +8.7 pts |
| Solar water heating | — | £4,000 – £6,000 | £228 | 22.0 yrs | +6.8 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 £2,251 a year — a 10.8% annual return on £20,778.
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: £185,345 HPI-indexed estimate, not a valuation
Rowsley Avenue: 21 sales since 1995 · £146,245 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Thomas of Canterbury RC School | Primary | 0.1 mi | — |
| Church Road Primary School | Primary | 0.3 mi | — |
| Devonshire Road Primary School | Primary | 0.4 mi | — |
| Smithills School | Secondary | 0.9 mi | Progress 8 -0.04 · average (2023/24) |
| Eden Boys' School, Bolton | Secondary | 1.3 mi | Progress 8 +0.45 · above average (2023/24) |
| Thornleigh Salesian College | Secondary | 1.3 mi | Progress 8 -0.22 · 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.
Rowsley Avenue
How this home sits against its street.