| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Loft insulation | — | £100 – £350 | £74 | 3.0 yrs | +3.4 pts · reaches F |
| High-performance doors | — | £1,000 – £0 | £124 | 4.0 yrs | +5.7 pts |
| Low energy lighting | — | £30 | £7 | 4.4 yrs | +0.3 pts |
| Floor insulation | — | £800 – £1,200 | £155 | 6.4 yrs | +7.1 pts |
| Heating controls | — | £350 – £450 | £57 | 7.1 yrs | +2.6 pts |
| Cavity wall insulation | — | £500 – £1,500 | £116 | 8.6 yrs | +5.3 pts · reaches E |
| Solar water heating | — | £4,000 – £6,000 | £120 | 41.5 yrs | +5.5 pts |
| Solar photovoltaic panels | — | £5,000 – £8,000 | £144 | 45.3 yrs | +6.6 pts |
| Solid wall insulation | — | £4,000 – £14,000 | £168 | 50+ yrs | +7.7 pts · reaches D |
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 £964 a year — a 4.1% annual return on £23,655.
Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.
Sold prices
Estimated today: £396,725 HPI-indexed estimate, not a valuation
Stone View: 17 sales since 1995 · £388,611 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Whitchurch Combined School | Primary | 0.4 mi | — |
| North Marston Church of England School | Primary | 1.1 mi | — |
| Quainton Church of England School | Primary | 2.7 mi | — |
| Waddesdon Church of England School | Secondary | 3.9 mi | Progress 8 +0.51 · well above average (2023/24) |
| Sir Thomas Fremantle School | Secondary | 4.6 mi | Progress 8 +0.03 · average (2023/24) |
| Aylesbury UTC | Secondary | 5.1 mi | Progress 8 -1.38 · well 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.
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 E01017704, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.
Stone View
How this home sits against its street.