42 Whitebarn Road, Llanishen, Cardiff CF14 5HB

Mid-Terrace house · Built 1950-1966 · 94 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

CB for £16,950 · £16,950 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Party wall insulation£300 – £600£3015.2 yrs+2.3 pts
Floor insulation£4,000 – £6,000£5450+ yrs+4.3 pts
Solar water heating£4,000 – £6,000£4250+ yrs+3.3 pts
Solar photovoltaic panels£5,000 – £8,000£5050+ yrs+4.0 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

£1,172
per year at grade C
£996
per year at grade B

The full plan saves £176 a year — a 1.0% annual return on £16,950.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £739 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

30 June 2023£300,000
20 December 2019£245,500
25 August 2017£179,250
14 November 2006£135,000
4 June 1999£57,000

Estimated today: £318,769 HPI-indexed estimate, not a valuation

Whitebarn Road: 69 sales since 1995 · £231,589 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.

Area context

Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.

13.4
crimes a month
147
in the last 12 months
Violence and sexual offences
most common · 33% of the total

Police.uk street-level data for LSOA W01001953, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Whitebarn Road

How this home sits against its street.

54
graded homes
66.7
average score
D
most common grade
+2.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.