| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Solar photovoltaic panels | — | £3,500 – £5,500 | £39 | 50+ yrs | +5.0 pts · reaches C |
| Solar water heating(optional, beyond C) | — | £4,000 – £6,000 | £33 | 50+ yrs | +4.2 pts |
| Solid wall insulation(optional, beyond C) | — | £4,000 – £14,000 | £45 | 50+ yrs | +5.8 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 £39 a year — a 0.9% annual return on £4,500.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2023, states £872 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £509,031 HPI-indexed estimate, not a valuation
Byrom Street: 307 sales since 1995 · £375,349 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 | 0.6 mi | — |
| Altrincham CofE (Aided) Primary School | Primary | 0.8 mi | — |
| Altrincham Grammar School for Boys | Secondary | 0.3 mi | Progress 8 +1.32 · well above average (2023/24) |
| Altrincham Grammar School for Girls | Secondary | 0.5 mi | Progress 8 +1.01 · well above average (2023/24) |
| Blessed Thomas Holford Catholic College | Secondary | 0.6 mi | Progress 8 +0.23 · 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.
Byrom Street
How this home sits against its street.