| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Floor insulation | — | £800 – £1,200 | £222 | 4.5 yrs | +5.5 pts |
| Heating controls | — | £350 – £450 | £81 | 5.0 yrs | +2.0 pts · reaches D |
| Low energy lighting | — | £55 | £10 | 5.7 yrs | +0.2 pts |
| Cavity wall insulation | — | £500 – £1,500 | £166 | 6.0 yrs | +4.1 pts |
| Flat roof insulation | — | £850 – £1,500 | £168 | 7.0 yrs | +4.2 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £205 | 21.9 yrs | +5.1 pts · reaches C |
| Solid wall insulation(optional, beyond C) | — | £4,000 – £14,000 | £240 | 37.5 yrs | +5.9 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 £851 a year — a 10.5% annual return on £8,130.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £1,579 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £1,189,279 HPI-indexed estimate, not a valuation
Boileau Road: 317 sales since 1995 · £814,552 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Holy Family Catholic Primary School | Primary | 0.3 mi | — |
| West Acton Primary School | Primary | 0.4 mi | — |
| Montpelier Primary School | Primary | 0.6 mi | — |
| The Ellen Wilkinson School for Girls | Secondary | 0.1 mi | Progress 8 +0.97 · well above average (2023/24) |
| Ada Lovelace Church of England High School | Secondary | 0.3 mi | Progress 8 +1.40 · well above average (2023/24) |
| Twyford Church of England High School | Secondary | 0.7 mi | Progress 8 +1.08 · 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.
Boileau Road
How this home sits against its street.