| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Solar photovoltaic panels | — | £3,500 – £5,500 | £123 | 36.5 yrs | +6.4 pts |
| Floor insulation | — | £4,000 – £6,000 | £133 | 37.5 yrs | +6.9 pts · reaches C |
| Solar water heating | — | £4,000 – £6,000 | £103 | 48.4 yrs | +5.3 pts |
| Solid wall insulation | — | £4,000 – £14,000 | £144 | 50+ yrs | +7.4 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 £504 a year — a 2.1% annual return on £23,500.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2020, states £809 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £180,695 HPI-indexed estimate, not a valuation
Sack Street: 7 sales since 1995
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Flowery Field Primary School | Primary | 0.2 mi | — |
| Oakfield Primary and Moderate Learning Difficulties Resource Provision | Primary | 0.3 mi | — |
| St. Mary's Catholic Primary School, a Voluntary Academy | Primary | 0.4 mi | — |
| Hyde High School | Secondary | 0.2 mi | Not in the KS4 performance tables |
| Rayner Stephens High School | Secondary | 0.5 mi | Progress 8 -1.03 · well below average (2023/24) |
| All Saints Catholic College | Secondary | 0.7 mi | Progress 8 -0.61 · well below 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.