| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Floor insulation | — | £5,000 – £10,000 | £105 | 50+ yrs | +4.7 pts · reaches C |
| Solid wall insulation | — | £7,500 – £11,000 | £113 | 50+ yrs | +5.0 pts |
| Solar photovoltaic panels | — | £8,000 – £10,000 | £97 | 50+ yrs | +4.3 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
£1,157
per year at grade D
£842
per year at grade B
The full plan saves £315 a year — a 1.2% annual return on £25,750.
Energy costs as modelled on the certificate, not a bill.
Sold prices
1 October 2020£95,000
Estimated today: £121,047 HPI-indexed estimate, not a valuation
Gwynan Road: 21 sales since 1995 · £111,409 average over 10 years
Schools nearby
The DfE register covers England. Welsh schools are held in a separate Welsh Government register, which we have not ingested yet.
Gwynan Road
How this home sits against its street.
16
graded homes
61.4
average score
D
most common grade
+5.6
this home vs street