| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £182 | 0.1 yrs | +7.0 pts |
| Loft insulation | — | £100 – £350 | £101 | 2.2 yrs | +3.9 pts |
| Flat roof insulation | — | £850 – £1,500 | £162 | 7.3 yrs | +6.3 pts · reaches E |
| Change of heating system | — | £3,000 – £7,000 | £607 | 8.2 yrs | +23.5 pts · reaches D |
| Floor insulation | — | £800 – £6,000 | £213 | 16.0 yrs | +8.2 pts · reaches C |
| Solar water heating | — | £4,000 – £6,000 | £165 | 30.3 yrs | +6.4 pts |
| Solar photovoltaic panels | — | £5,000 – £8,000 | £197 | 33.0 yrs | +7.6 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 £1,627 a year — a 7.6% annual return on £21,323.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2015, states £1,659 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £119,451 HPI-indexed estimate, not a valuation
Chilham Street: 52 sales since 1995 · £139,583 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Bede Academy | Primary | 0.2 mi | — |
| Heathfield Primary School | Primary | 0.3 mi | — |
| Essa Primary Academy | Primary | 0.4 mi | — |
| Essa Academy | Secondary | 0.4 mi | Progress 8 +0.73 · well above average (2023/24) |
| King's Leadership Academy Bolton | Secondary | 0.6 mi | Progress 8 +0.14 · average (2023/24) |
| Bolton Muslim Girls School | Secondary | 0.8 mi | Progress 8 +1.06 · 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.
Chilham Street
How this home sits against its street.