| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Cavity wall insulation | — | £500 – £1,500 | £94 | 10.7 yrs | +3.0 pts · reaches C |
| Floor insulation | — | £4,000 – £6,000 | £125 | 39.9 yrs | +4.1 pts |
| Solar water heating | — | £4,000 – £6,000 | £97 | 50+ yrs | +3.1 pts |
| Solar photovoltaic panels | — | £5,000 – £8,000 | £116 | 50+ yrs | +3.8 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 £432 a year — a 2.5% annual return on £17,500.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2015, states £1,229 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £890,862 HPI-indexed estimate, not a valuation
Deanfield Road: 144 sales since 1995 · £671,311 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Sacred Heart Catholic Primary School, Henley-on-Thames | Primary | 0.2 mi | — |
| Trinity Church of England Primary School | Primary | 0.3 mi | — |
| Badgemore Primary School | Primary | 0.4 mi | — |
| Gillotts School | Secondary | 0.8 mi | Progress 8 +0.71 · well above average (2023/24) |
| Maiden Erlegh Chiltern Edge | Secondary | 3.8 mi | Progress 8 -0.40 · below average (2023/24) |
| Highdown School and Sixth Form Centre | Secondary | 4.6 mi | Progress 8 +0.25 · 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.
Deanfield Road
How this home sits against its street.