| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £200 – £400 | £61 | 4.9 yrs | +3.3 pts · reaches D |
| High-performance doors | — | £1,000 – £0 | £57 | 8.8 yrs | +3.1 pts |
| Heating controls | — | £350 – £450 | £26 | 15.4 yrs | +1.4 pts |
| Biomass boiler | −£5,000 Boiler Upgrade Scheme | £2,000 – £8,000 | £237 | 21.1 yrs | +12.8 pts · reaches C |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £66 | 50+ yrs | +3.6 pts |
| Floor insulation | — | £4,000 – £6,000 | £71 | 50+ yrs | +3.9 pts · reaches B |
| Solar water heating(optional, beyond B) | — | £4,000 – £6,000 | £55 | 50+ yrs | +3.0 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 £518 a year — a 3.3% annual return on £15,700.
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: £221,342 HPI-indexed estimate, not a valuation
Marlborough Close: 8 sales since 1995 · £271,750 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Weston Primary & Nursery School | Primary | 0.4 mi | — |
| Round Diamond Primary School | Primary | 1.7 mi | — |
| The Leys Primary and Nursery School | Primary | 1.9 mi | — |
| The Knights Templar School | Secondary | 2.5 mi | Progress 8 -0.27 · below average (2023/24) |
| The Nobel School | Secondary | 2.9 mi | Progress 8 +0.38 · above average (2023/24) |
| The Saint John Henry Newman Catholic School | Secondary | 3.0 mi | Progress 8 +0.72 · 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.
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 E01023663, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.
Marlborough Close
How this home sits against its street.