| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Air or ground source heat pump | −£7,500 Boiler Upgrade Scheme | £0 – £22,500 | £3,386 | 3.3 yrs | +25.7 pts · reaches C |
| Solar photovoltaic panels | — | £8,000 – £10,000 | £1,228 | 7.3 yrs | +9.3 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 £4,614 a year — a 22.8% annual return on £20,250.
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: £1,214,241 HPI-indexed estimate, not a valuation
Highclere Drive: 24 sales since 1995 · £985,000 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Chambersbury Primary School | Primary | 0.2 mi | — |
| Belswains Primary School | Primary | 0.4 mi | — |
| Nash Mills Church of England Primary School | Primary | 0.5 mi | — |
| Longdean School | Secondary | 0.5 mi | Progress 8 -0.29 · below average (2023/24) |
| The Adeyfield Academy | Secondary | 1.3 mi | Progress 8 -0.97 · well below average (2023/24) |
| Kings Langley School | Secondary | 1.5 mi | Progress 8 +0.07 · 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 E01023415, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.
Highclere Drive
How this home sits against its street.