| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Solid wall insulation | — | £14,000 – £0 | £220 | 31.8 yrs | +6.7 pts · reaches C |
| Double glazing(optional, beyond C) | — | £6,500 – £500 | £74 | 47.5 yrs | +2.3 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
£1,008
per year at grade D
£714
per year at grade C
The full plan saves £220 a year — a 3.1% annual return on £7,000.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £638 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
2 December 2015£100,000
Estimated today: £130,829 HPI-indexed estimate, not a valuation
Castle Street: 5 sales since 1995
Schools nearby
No school in the register within reach of this postcode.
Castle Street
How this home sits against its street.
3
graded homes
67.7
average score
D
most common grade
-0.7
this home vs street