7 Hastings Crescent, Old St. Mellons, Cardiff CF3 5DF

Detached house · Built 1996-2002 · 101 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

DB for £17,325 · £8,663 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£100 – £350£415.5 yrs+2.1 pts · reaches C
Band A condensing boiler£2,200 – £3,000£5349.1 yrs+2.8 pts
Solar photovoltaic panels£3,500 – £5,500£8050+ yrs+4.1 pts
Floor insulation£4,000 – £6,000£8650+ yrs+4.5 pts
Solar water heating£4,000 – £6,000£6750+ yrs+3.5 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

£1,326
per year at grade D
£999
per year at grade B

The full plan saves £327 a year — a 1.9% annual return on £17,325.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £796 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

11 September 2009£207,500
18 November 2003£165,000
14 June 1996£79,995

Estimated today: £386,549 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.

Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.