| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £400 | £240 | 0.9 yrs | +6.3 pts |
| Floor insulation | — | £800 – £1,200 | £281 | 3.6 yrs | +7.3 pts |
| Heating controls | — | £350 – £450 | £102 | 3.9 yrs | +2.7 pts · reaches D |
| Cavity wall insulation | — | £500 – £1,500 | £210 | 4.8 yrs | +5.5 pts |
| Low energy lighting | — | £70 | £12 | 5.7 yrs | +0.3 pts |
| Band A condensing boiler | — | £2,200 – £3,000 | £173 | 15.1 yrs | +4.5 pts |
| Solar water heating | — | £4,000 – £6,000 | £218 | 22.9 yrs | +5.7 pts · reaches C |
| Solar photovoltaic panels(optional, beyond C) | — | £9,000 – £14,000 | £260 | 44.2 yrs | +6.8 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
£2,789
per year at grade E
£1,292
per year at grade C
The full plan saves £1,237 a year — a 12.0% annual return on £10,278.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2014, states £1,856 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
23 September 2019£314,000
9 January 2015£220,000
Estimated today: £444,591 HPI-indexed estimate, not a valuation
Schools nearby
The DfE register covers England. Welsh schools are held in a separate Welsh Government register, which we have not ingested yet.