| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Solar photovoltaic panels | — | £3,500 – £5,500 | £101 | 44.7 yrs | +4.4 pts |
| Floor insulation | — | £4,000 – £6,000 | £109 | 46.0 yrs | +4.8 pts · reaches C |
| Solar water heating | — | £4,000 – £6,000 | £84 | 50+ yrs | +3.7 pts |
| Solid wall insulation | — | £4,000 – £14,000 | £117 | 50+ yrs | +5.1 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 £411 a year — a 1.7% annual return on £23,500.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2023, states £2,130 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £413,970 HPI-indexed estimate, not a valuation
Brien Avenue: 97 sales since 1995 · £327,589 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Navigation Primary School | Primary | 0.2 mi | — |
| Altrincham CofE (Aided) Primary School | Primary | 0.5 mi | — |
| St Vincent's Catholic Primary School | Primary | 0.5 mi | — |
| Wellington School | Secondary | 0.6 mi | Progress 8 +0.56 · well above average (2023/24) |
| North Cestrian School | Secondary | 0.7 mi | Progress 8 +0.49 · above average (2023/24) |
| Loreto Grammar School | Secondary | 0.8 mi | Progress 8 +1.06 · 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.
Brien Avenue
How this home sits against its street.