| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £25 | £43 | 0.6 yrs | +2.0 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 £43 a year — a 172.0% annual return on £25.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2011, states £324 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £266,935 HPI-indexed estimate, not a valuation
Erebus Drive: 691 sales since 1995 · £317,470 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Heronsgate Primary School | Primary | 0.3 mi | — |
| St Patrick's Catholic Primary School | Primary | 0.6 mi | — |
| Foxfield Primary School | Primary | 0.6 mi | — |
| London Design and Engineering UTC | Secondary | 1.0 mi | Progress 8 -0.38 · below average (2023/24) |
| Plumstead Manor School | Secondary | 1.0 mi | Progress 8 -0.65 · well below average (2023/24) |
| St Paul's Academy | Secondary | 1.2 mi | Progress 8 -0.25 · 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.
Erebus Drive
How this home sits against its street.