| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Heating controls | — | £350 – £450 | £21 | 19.1 yrs | +1.6 pts · reaches C |
| Cavity wall insulation | — | £500 – £1,500 | £43 | 23.3 yrs | +3.3 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £53 | 50+ yrs | +4.1 pts |
| Floor insulation | — | £4,000 – £6,000 | £57 | 50+ yrs | +4.5 pts · reaches B |
| Solar water heating(optional, beyond B) | — | £4,000 – £6,000 | £45 | 50+ yrs | +3.5 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 £174 a year — a 1.6% annual return on £10,900.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2021, states £715 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £328,048 HPI-indexed estimate, not a valuation
Penthorpe Drive: 77 sales since 1995 · £140,473 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Blackshaw Lane Primary & Nursery School | Primary | 0.3 mi | — |
| Royton Hall Primary School | Primary | 0.4 mi | — |
| Ss Aidan and Oswald's RC Primary School, a Voluntary Academy | Primary | 0.4 mi | — |
| E-ACT Royton and Crompton Academy | Secondary | 0.3 mi | Progress 8 -0.53 · well below average (2023/24) |
| E-ACT the Oldham Academy North | Secondary | 0.6 mi | Progress 8 +0.38 · above average (2023/24) |
| The Blue Coat CofE School | Secondary | 1.2 mi | Progress 8 +0.50 · 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.
Penthorpe Drive
How this home sits against its street.