| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Party wall insulation | — | £300 – £600 | £47 | 9.6 yrs | +2.9 pts |
| Cavity wall insulation | — | £500 – £1,500 | £64 | 15.6 yrs | +4.0 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £79 | 50+ yrs | +4.9 pts · reaches B |
| Solar water heating(optional, beyond B) | — | £4,000 – £6,000 | £67 | 50+ yrs | +4.1 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
£1,125
per year at grade C
£868
per year at grade B
The full plan saves £190 a year — a 3.2% annual return on £5,950.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2023, states £1,542 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
17 May 2019£140,000
29 November 2013£115,000
Estimated today: £194,895 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.