| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Party wall insulation | — | £300 – £600 | £34 | 13.3 yrs | +2.3 pts |
| Cavity wall insulation | — | £500 – £1,500 | £47 | 21.5 yrs | +3.2 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £58 | 50+ yrs | +3.9 pts |
| Floor insulation | — | £4,000 – £6,000 | £62 | 50+ yrs | +4.3 pts · reaches B |
| Solar water heating(optional, beyond B) | — | £4,000 – £6,000 | £48 | 50+ yrs | +3.3 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
£1,148
per year at grade C
£899
per year at grade B
The full plan saves £201 a year — a 1.8% annual return on £10,950.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £724 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
21 April 2017£125,000
21 December 2000£55,500
Estimated today: £176,887 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.