| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Flat roof insulation | — | £900 – £1,200 | £60 | 17.5 yrs | +3.2 pts |
| Cavity wall insulation | — | £900 – £1,500 | £59 | 20.4 yrs | +3.1 pts · reaches C |
| Floor insulation | — | £5,000 – £10,000 | £79 | 50+ yrs | +4.2 pts |
| Solid wall insulation | — | £7,500 – £11,000 | £85 | 50+ yrs | +4.6 pts |
| Solar photovoltaic panels | — | £8,000 – £10,000 | £73 | 50+ yrs | +3.9 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 £356 a year — a 1.3% annual return on £28,000.
Energy costs as modelled on the certificate, not a bill.
Sold prices
Estimated today: £132,117 HPI-indexed estimate, not a valuation
Higher Darcy Street: 66 sales since 1995 · £104,555 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Stephen and All Martyrs' CofE School, Lever Bridge | Primary | 0.2 mi | — |
| Bolton Parish Church, Church of England Primary School | Primary | 0.5 mi | — |
| St Michael's CofE Primary School, Great Lever | Primary | 0.7 mi | — |
| Little Lever School | Secondary | 1.2 mi | Progress 8 +0.13 · average (2023/24) |
| Mount St Joseph RC High School a Voluntary Academy | Secondary | 1.3 mi | Not in the KS4 performance tables |
| University Collegiate School | Secondary | 1.4 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.
Higher Darcy Street
How this home sits against its street.