| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £20 – £45typical | £8 | 4.2 yrs | +0.2 pts |
| Heating controls | — | £400typical | £65 | 6.2 yrs | +1.7 pts |
| Cavity wall insulation | — | £1,000typical | £133 | 7.5 yrs | +3.4 pts |
| Band A condensing boiler | — | £2,600typical | £109 | 23.8 yrs | +2.8 pts |
| Solar water heating | — | £5,000typical | £138 | 36.3 yrs | +3.6 pts |
| Solar photovoltaic panels | — | £4,500 – £9,000typical | £164 | 41.0 yrs | +4.3 pts · reaches D |
| Solid wall insulation(optional, beyond D) | — | £9,000typical | £192 | 46.8 yrs | +5.0 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 £617 a year — a 3.9% annual return on £15,783.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2010, states £1,464 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £521,320 HPI-indexed estimate, not a valuation
Park Avenue: 166 sales since 1995 · £431,582 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Beecholme Primary School | Primary | 0.2 mi | — |
| Links Primary School | Primary | 0.3 mi | — |
| Gorringe Park Primary School | Primary | 0.4 mi | — |
| Graveney School | Secondary | 0.5 mi | Progress 8 +0.74 · well above average (2023/24) |
| St Mark's Church of England Academy | Secondary | 0.7 mi | Progress 8 +0.70 · well above average (2023/24) |
| Harris Academy Merton | Secondary | 1.2 mi | Progress 8 +0.67 · well 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.
Park Avenue
How this home sits against its street.