| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Low energy lighting | — | £40 | £4 | 11.3 yrs | +0.2 pts |
| Floor insulation | — | £800 – £1,200 | £81 | 12.4 yrs | +5.1 pts · reaches C |
| Heating controls | — | £350 – £450 | £29 | 13.6 yrs | +1.9 pts |
| Solar water heating | — | £4,000 – £6,000 | £63 | 50+ yrs | +4.0 pts |
| Solar photovoltaic panels | — | £9,000 – £14,000 | £75 | 50+ yrs | +4.8 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
£1,290
per year at grade D
£1,039
per year at grade B
The full plan saves £251 a year — a 1.4% annual return on £17,940.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2013, states £812 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
30 April 2014£230,000
Estimated today: £374,328 HPI-indexed estimate, not a valuation
Tarnbeck Drive: 80 sales since 1995 · £312,553 average over 10 years
Schools nearby
No school in the register within reach of this postcode.
Tarnbeck Drive
How this home sits against its street.
31
graded homes
66.5
average score
D
most common grade
-0.5
this home vs street