| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £23 – £300typical | £141 | 1.1 yrs | +3.9 pts |
| Loft insulation | — | £225typical | £78 | 2.9 yrs | +2.2 pts · reaches D |
| Low energy lighting | — | £20 – £50typical | £7 | 4.9 yrs | +0.2 pts |
| Cavity wall insulation | — | £1,000typical | £123 | 8.1 yrs | +3.4 pts |
| Band A condensing boiler | — | £2,600typical | £101 | 25.7 yrs | +2.8 pts |
| Solar water heating | — | £5,000typical | £128 | 39.2 yrs | +3.6 pts |
| Solar photovoltaic panels | — | £4,500 – £9,000typical | £152 | 44.4 yrs | +4.2 pts · reaches C |
| Double glazing(optional, beyond C) | — | £1,200 – £4,900typical | £59 | 50+ yrs | +1.7 pts |
Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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 £730 a year — a 4.6% annual return on £15,772.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £1,227 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £900,609 HPI-indexed estimate, not a valuation
Chiltern Drive: 52 sales since 1995 · £761,955 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Stamford Park Primary School | Primary | 0.4 mi | — |
| Bowdon CofE Primary School | Primary | 0.9 mi | — |
| St Vincent's Catholic Primary School | Primary | 0.9 mi | — |
| Altrincham Grammar School for Boys | Secondary | 0.6 mi | Progress 8 +1.32 · well above average (2023/24) |
| Blessed Thomas Holford Catholic College | Secondary | 0.6 mi | Progress 8 +0.23 · above average (2023/24) |
| Altrincham College | Secondary | 0.7 mi | Progress 8 -0.03 · 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.
Chiltern Drive
How this home sits against its street.