| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £40 | £5 | 8.5 yrs | +0.2 pts |
| Floor insulation | — | £800 – £1,200 | £107 | 9.3 yrs | +5.4 pts · reaches D |
| Cavity wall insulation | — | £500 – £1,500 | £80 | 12.5 yrs | +4.1 pts |
| Solar water heating | — | £4,000 – £6,000 | £83 | 50+ yrs | +4.2 pts |
| Solar photovoltaic panels | — | £9,000 – £14,000 | £99 | 50+ yrs | +5.0 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 £375 a year — a 2.0% annual return on £18,540.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2013, states £1,151 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £219,898 HPI-indexed estimate, not a valuation
Williamson Avenue: 9 sales since 1995
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Andrew's Church of England Primary School, Radcliffe | Primary | 0.1 mi | — |
| Wesley Methodist Primary School | Primary | 0.3 mi | — |
| St Mary's Roman Catholic Primary School, A Voluntary Academy | Primary | 0.6 mi | — |
| Star Radcliffe Academy | Secondary | 0.9 mi | Not in the KS4 performance tables |
| The Derby High School | Secondary | 1.3 mi | Not in the KS4 performance tables |
| St Gabriel's RC High School, a Voluntary Academy | Secondary | 1.6 mi | Progress 8 -0.18 · 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.
Williamson Avenue
How this home sits against its street.