| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £23 – £50typical | £6 | 6.1 yrs | +0.2 pts |
| Cavity wall insulation | — | £1,000typical | £103 | 9.7 yrs | +2.6 pts · reaches D |
| Solar photovoltaic panels(optional, beyond D) | — | £4,500 – £9,000typical | £127 | 50+ yrs | +3.2 pts |
Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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 £109 a year — a 10.5% annual return on £1,037.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2009, states £1,171 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £482,230 HPI-indexed estimate, not a valuation
Summerseat Close: 5 sales since 1995
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Knowsley Junior School | Primary | 0.3 mi | — |
| Springhead Infant and Nursery School | Primary | 0.4 mi | — |
| Hey-with-Zion Primary School | Primary | 0.5 mi | — |
| Waterhead Academy | Secondary | 0.5 mi | Progress 8 -0.72 · well below average (2023/24) |
| Oasis Academy Leesbrook | Secondary | 1.1 mi | Progress 8 +0.12 · average (2023/24) |
| The Blue Coat CofE School | Secondary | 1.9 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.