| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Draughtproofing | — | £80 – £120 | £172 | 0.6 yrs | +5.0 pts |
| Loft insulation | — | £100 – £350 | £97 | 2.3 yrs | +2.8 pts |
| Cavity wall insulation | — | £500 – £1,500 | £153 | 6.5 yrs | +4.4 pts |
| Band A condensing boiler | — | £2,200 – £3,000 | £126 | 20.7 yrs | +3.6 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £189 | 23.8 yrs | +5.5 pts · reaches D |
| Floor insulation | — | £4,000 – £6,000 | £205 | 24.4 yrs | +5.9 pts |
| Solar water heating | — | £4,000 – £6,000 | £159 | 31.5 yrs | +4.6 pts · reaches C |
| Double glazing(optional, beyond C) | — | £3,300 – £6,500 | £74 | 50+ yrs | +2.1 pts |
| Wind turbine(optional, beyond C) | — | £15,000 – £25,000 | £170 | 50+ yrs | +4.9 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 £1,101 a year — a 6.0% annual return on £18,425.
Energy costs as modelled on the certificate, not a bill.
Sold prices
Estimated today: £835,312 HPI-indexed estimate, not a valuation
Round Maple: 13 sales since 1995 · £475,000 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Boxford Church of England Voluntary Controlled Primary School | Primary | 2.2 mi | — |
| Great Waldingfield Church of England Voluntary Controlled Primary School | Primary | 2.9 mi | — |
| Kersey Church of England Primary School | Primary | 3.1 mi | — |
| Thomas Gainsborough School | Secondary | 4.4 mi | Progress 8 +0.21 · above average (2023/24) |
| Ormiston Sudbury Academy | Secondary | 4.8 mi | Progress 8 -0.30 · below average (2023/24) |
| Hadleigh High School | Secondary | 5.1 mi | Progress 8 -0.16 · 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.
Area context
Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.
Police.uk street-level data for LSOA E01029875, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.
Round Maple
How this home sits against its street.