| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £30 | £165 | 0.1 yrs | +4.3 pts |
| Loft insulation | — | £100 – £350 | £92 | 2.4 yrs | +2.4 pts |
| Floor insulation | — | £800 – £1,200 | £193 | 5.2 yrs | +5.0 pts |
| Low energy lighting | — | £45 | £8 | 5.3 yrs | +0.2 pts |
| Heating controls | — | £350 – £450 | £70 | 5.7 yrs | +1.8 pts · reaches C |
| Double glazing | — | £1,000 – £1,400 | £70 | 17.2 yrs | +1.8 pts |
| Band A condensing boiler | — | £2,200 – £3,000 | £119 | 21.9 yrs | +3.1 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £179 | 25.2 yrs | +4.6 pts |
| Solar water heating | — | £4,000 – £6,000 | £150 | 33.3 yrs | +3.9 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
£2,182
per year at grade D
£1,135
per year at grade B
The full plan saves £1,047 a year — a 7.0% annual return on £14,993.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2024, states £2,268 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
28 September 2001£175,000
19 June 1997£93,500
Estimated today: £496,875 HPI-indexed estimate, not a valuation
Rumsam Gardens: 44 sales since 1995 · £392,636 average over 10 years
Schools nearby
No school in the register within reach of this postcode.
Rumsam Gardens
How this home sits against its street.
24
graded homes
65.9
average score
D
most common grade
-8.9
this home vs street