| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| High-retention storage heaters | — | £1,600 – £3,200 | £1,252 | 1.9 yrs | +26.8 pts · reaches E |
| Loft insulation | — | £900 – £1,200 | £302 | 3.5 yrs | +6.5 pts |
| Low energy lighting | — | £270 – £315 | £28 | 10.5 yrs | +0.6 pts |
| Floor insulation | — | £5,000 – £10,000 | £635 | 11.8 yrs | +13.6 pts · reaches D |
| Solar photovoltaic panels | — | £8,000 – £10,000 | £588 | 15.3 yrs | +12.6 pts · reaches C |
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 £2,805 a year — a 13.9% annual return on £20,243.
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: £101,121 HPI-indexed estimate, not a valuation
Cobham Avenue: 9 sales since 1995 · £106,000 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Lever Edge Primary Academy | Primary | 0.2 mi | — |
| St William of York Roman Catholic Primary School | Primary | 0.3 mi | — |
| The Olive Tree Primary School Bolton | Primary | 0.3 mi | — |
| King's Leadership Academy Bolton | Secondary | 0.4 mi | Progress 8 +0.14 · average (2023/24) |
| Bolton Muslim Girls School | Secondary | 0.4 mi | Progress 8 +1.06 · well above average (2023/24) |
| Essa Academy | Secondary | 0.5 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.
Cobham Avenue
How this home sits against its street.