| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Floor insulation | — | £1,200 – £200 | £152 | 4.6 yrs | +5.9 pts · reaches D |
| High-performance doors | — | £1,500 – £500 | £122 | 8.2 yrs | +4.7 pts |
| Solid wall insulation | — | £14,000 – £0 | £165 | 42.5 yrs | +6.4 pts · reaches C |
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 £439 a year — a 5.0% annual return on £8,700.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2017, states £721 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £395,713 HPI-indexed estimate, not a valuation
Byng Road: 70 sales since 1995 · £758,648 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Christ Church Primary School | Primary | under 0.1 mi | — |
| Foulds School | Primary | under 0.1 mi | — |
| Whitings Hill Primary School | Primary | 0.8 mi | — |
| Queen Elizabeth's School, Barnet | Secondary | 0.1 mi | Progress 8 +1.22 · well above average (2023/24) |
| Queen Elizabeth's Girls' School | Secondary | 0.8 mi | Progress 8 +0.74 · well above average (2023/24) |
| Ark Pioneer Academy | Secondary | 1.2 mi | Progress 8 +0.57 · 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 E01000249, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.
Byng Road
How this home sits against its street.