Upgrade Plan
Get upgrade quotes| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Band A condensing boiler(optional, beyond C) | — | £2,200 – £3,500 | £30 | 50+ yrs | +2.8 pts |
| Solar photovoltaic panels(optional, beyond C) | — | £8,000 – £10,000 | £44 | 50+ yrs | +4.2 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
Energy costs as modelled on the certificate, not a bill.
Sold prices
Estimated today: £365,556 HPI-indexed estimate, not a valuation
Sewell Close: 367 sales since 1995 · £273,794 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Harris Primary Academy Chafford Hundred | Primary | 0.1 mi | — |
| Harris Primary Academy Mayflower | Primary | 0.1 mi | — |
| Warren Primary School | Primary | 0.6 mi | — |
| Harris Academy Chafford Hundred | Secondary | 0.1 mi | Progress 8 +1.04 · well above average (2023/24) |
| Thames Park Secondary School | Secondary | 1.0 mi | Attainment 8 46.4 · no Progress 8 published |
| Grays Convent High School | Secondary | 1.6 mi | Progress 8 +0.76 · 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.
Sewell Close
How this home sits against its street.