| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Cavity wall insulation | — | £500 – £1,500 | £262 | 3.8 yrs | +5.5 pts |
| Low energy lighting | — | £75 | £15 | 4.9 yrs | +0.3 pts |
| Floor insulation | — | £4,000 – £6,000 | £351 | 14.2 yrs | +7.4 pts · reaches C |
| Solar photovoltaic panels(optional, beyond C) | — | £5,000 – £8,000 | £325 | 20.0 yrs | +6.8 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 £629 a year — a 10.4% annual return on £6,075.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2016, states £2,006 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £668,373 HPI-indexed estimate, not a valuation
Riversleigh Close: 4 sales since 1995
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Johnson Fold Community Primary School | Primary | 0.3 mi | — |
| St Peter's Smithills Dean Church of England Primary School | Primary | 0.4 mi | — |
| Church Road Primary School | Primary | 0.6 mi | — |
| Smithills School | Secondary | 0.7 mi | Progress 8 -0.04 · average (2023/24) |
| Thornleigh Salesian College | Secondary | 1.1 mi | Progress 8 -0.22 · below average (2023/24) |
| Eden Boys' School, Bolton | Secondary | 1.5 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.