| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Draughtproofing | — | £120 | £111 | 1.1 yrs | +5.3 pts · reaches D |
| Loft insulation | — | £350 | £63 | 5.6 yrs | +3.0 pts |
| Low energy lighting | — | £45 | £6 | 7.8 yrs | +0.3 pts |
| Heating controls | — | £450 | £48 | 9.4 yrs | +2.3 pts |
| Floor insulation | — | £6,000 – £0 | £131 | 22.8 yrs | +6.3 pts · reaches C |
| Solar water heating | — | £6,000 – £0 | £102 | 29.4 yrs | +4.9 pts |
| Solar photovoltaic panels | — | £8,000 – £0 | £122 | 32.9 yrs | +5.8 pts · reaches B |
| Double glazing(optional, beyond B) | — | £6,500 – £500 | £48 | 50+ yrs | +2.3 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 5.3% annual return on £10,965.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2016, states £1,033 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £221,577 HPI-indexed estimate, not a valuation
Mariman Drive: 32 sales since 1995 · £170,313 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Crumpsall Lane Primary School | Primary | 0.3 mi | — |
| Crab Lane Primary School | Primary | 0.6 mi | — |
| Pike Fold Primary School | Primary | 0.6 mi | — |
| The King David High School | Secondary | 0.5 mi | Progress 8 +0.50 · above average (2023/24) |
| Co-op Academy Manchester | Secondary | 0.8 mi | Progress 8 -0.02 · average (2023/24) |
| Our Lady's RC High School | Secondary | 1.2 mi | Progress 8 +0.33 · 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.
Mariman Drive
How this home sits against its street.