| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Flue gas heat recovery | — | £900 | £149 | 6.0 yrs | +6.6 pts |
| Heating controls | — | £350 – £450 | £56 | 7.2 yrs | +2.5 pts |
| Cavity wall insulation | — | £500 – £1,500 | £115 | 8.7 yrs | +5.0 pts · reaches C |
| Shower heat recovery | — | £585 – £725 | £25 | 25.9 yrs | +1.1 pts |
| Band A condensing boiler | — | £2,200 – £3,000 | £94 | 27.6 yrs | +4.1 pts |
| Solar photovoltaic panels | — | £9,000 – £14,000 | £142 | 50+ yrs | +6.2 pts · reaches B |
| Double glazing(optional, beyond B) | — | £3,300 – £6,500 | £56 | 50+ yrs | +2.4 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 £581 a year — a 3.4% annual return on £17,055.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2012, states £920 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £563,500 HPI-indexed estimate, not a valuation
Darley Avenue: 310 sales since 1995 · £374,540 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 | 0.1 mi | — |
| Barlow Hall Primary School | Primary | 0.5 mi | — |
| Cavendish Primary School | Primary | 0.8 mi | — |
| Didsbury High School | Secondary | 0.6 mi | Progress 8 +0.67 · well above average (2023/24) |
| Loreto High School Chorlton | Secondary | 0.7 mi | Progress 8 -0.07 · 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.
Darley Avenue
How this home sits against its street.