| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £30 | £6 | 4.6 yrs | +0.3 pts |
| Heating controls | — | £450 | £54 | 8.3 yrs | +2.1 pts |
| Cavity wall insulation | — | £1,500 – £500 | £111 | 9.0 yrs | +4.3 pts |
| Band A condensing boiler | — | £3,000 – £0 | £91 | 16.4 yrs | +3.6 pts |
| Floor insulation | — | £6,000 – £0 | £149 | 20.2 yrs | +5.8 pts · reaches C |
| Solar photovoltaic panels | — | £5,500 – £500 | £137 | 21.8 yrs | +5.4 pts |
| Solar water heating | — | £6,000 – £0 | £115 | 26.0 yrs | +4.5 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 £664 a year — a 5.5% annual return on £11,980.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £1,055 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £515,803 HPI-indexed estimate, not a valuation
Denis Avenue: 4 sales since 1995
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| St Margaret's CofE Primary School | Primary | 0.2 mi | — |
| William Hulme's Grammar School | All-through | 0.3 mi | Progress 8 +0.40 · above average (2023/24) |
| Our Lady's RC Primary School Manchester | Primary | 0.5 mi | — |
| Whalley Range 11-18 High School | Secondary | 0.5 mi | Progress 8 +0.79 · well above average (2023/24) |
| CHS South | Secondary | 0.7 mi | Progress 8 -0.14 · 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.