| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Loft insulation | — | £100 – £350 | £118 | 1.9 yrs | +4.1 pts · reaches F |
| Floor insulation | — | £800 – £1,200 | £249 | 4.0 yrs | +8.5 pts |
| Heating controls | — | £350 – £450 | £91 | 4.4 yrs | +3.1 pts |
| Cavity wall insulation | — | £500 – £1,500 | £186 | 5.4 yrs | +6.4 pts · reaches E |
| Change of heating system | — | £3,000 – £7,000 | £710 | 7.0 yrs | +24.4 pts · reaches D |
| Solar water heating | — | £4,000 – £6,000 | £193 | 25.9 yrs | +6.6 pts · reaches C |
| Solar photovoltaic panels(optional, beyond C) | — | £9,000 – £14,000 | £230 | 49.9 yrs | +7.9 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 £1,547 a year — a 12.3% annual return on £12,625.
Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.
Sold prices
Estimated today: £324,706 HPI-indexed estimate, not a valuation
Caldervale Avenue: 71 sales since 1995 · £250,765 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Ambrose RC Primary School | Primary | 0.3 mi | — |
| Barlow Hall Primary School | Primary | 0.4 mi | — |
| Chorlton Park Primary | Primary | 0.7 mi | — |
| Loreto High School Chorlton | Secondary | 0.8 mi | Progress 8 -0.07 · average (2023/24) |
| Didsbury High School | Secondary | 0.9 mi | Progress 8 +0.67 · well above average (2023/24) |
| Chorlton High School | Secondary | 0.9 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.
Caldervale Avenue
How this home sits against its street.