| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £400 | £259 | 0.8 yrs | +5.0 pts · reaches D |
| Heating controls | — | £350 – £450 | £110 | 3.6 yrs | +2.1 pts |
| Band A condensing boiler | — | £2,200 – £3,000 | £186 | 14.0 yrs | +3.6 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £280 | 16.0 yrs | +5.4 pts · reaches C |
| Floor insulation(optional, beyond C) | — | £4,000 – £6,000 | £303 | 16.5 yrs | +5.9 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 £836 a year — a 10.8% annual return on £7,708.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2021, states £1,999 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £401,326 HPI-indexed estimate, not a valuation
Thirlmere Avenue: 63 sales since 1995 · £232,833 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Tyldesley Primary School | Primary | under 0.1 mi | — |
| Tyldesley St George's Central CofE Primary School and Nursery | Primary | 0.4 mi | — |
| St Stephen's CofE Primary School | Primary | 0.6 mi | — |
| Fred Longworth High School | Secondary | 0.8 mi | Progress 8 -0.29 · below average (2023/24) |
| St Mary's Catholic High School | Secondary | 1.0 mi | Progress 8 -0.20 · average (2023/24) |
| Bedford High School | Secondary | 1.6 mi | Progress 8 -0.24 · 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.
Thirlmere Avenue
How this home sits against its street.