| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £87 | 0.3 yrs | +3.9 pts · reaches D |
| Low energy lighting | — | £35 | £4 | 7.8 yrs | +0.2 pts |
| Floor insulation | — | £800 – £1,200 | £102 | 9.8 yrs | +4.5 pts |
| Change of heating system | — | £3,000 – £7,000 | £292 | 17.1 yrs | +13.0 pts · reaches C |
| Solar water heating | — | £4,000 – £6,000 | £79 | 50+ yrs | +3.5 pts |
| Solar photovoltaic panels | — | £5,000 – £8,000 | £95 | 50+ yrs | +4.2 pts · reaches B |
| Double glazing(optional, beyond B) | — | £3,300 – £6,500 | £37 | 50+ yrs | +1.6 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 £660 a year — a 3.8% annual return on £17,558.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2015, states £1,130 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £154,120 HPI-indexed estimate, not a valuation
Valpy Avenue: 29 sales since 1995 · £97,895 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Columba's RC Primary School | Primary | 0.1 mi | — |
| Castle Hill Primary School | Primary | 0.3 mi | — |
| Sharples Primary School | Primary | 0.6 mi | — |
| Canon Slade School | Secondary | 0.2 mi | Progress 8 +0.29 · above average (2023/24) |
| Sharples School | Secondary | 0.8 mi | Progress 8 +0.86 · well above average (2023/24) |
| Eden Boys' School, Bolton | Secondary | 1.0 mi | Progress 8 +0.45 · 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.
Valpy Avenue
How this home sits against its street.