66 Treharris Street, Cardiff CF24 3HL

Mid-Terrace house · Built before 1900 · 74 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Draughtproofing(optional, beyond C)£150 – £250£603.3 yrs+2.9 pts
Low energy lighting(optional, beyond C)£150 – £175£350+ yrs+0.2 pts
Solid wall insulation(optional, beyond C)£7,500 – £11,000£7750+ yrs+3.7 pts
Solar photovoltaic panels(optional, beyond C)£8,000 – £10,000£6650+ yrs+3.2 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

£1,065
per year at grade C
£860
per year at grade C

Energy costs as modelled on the certificate, not a bill.

Sold prices

11 September 2018£194,950
30 July 2018£183,000
22 November 2013£143,000
29 June 2012£116,000

Estimated today: £265,748 HPI-indexed estimate, not a valuation

Treharris Street: 342 sales since 1995 · £212,120 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.

11.2
crimes a month
123
in the last 12 months
Violence and sexual offences
most common · 24% of the total

Police.uk street-level data for LSOA W01001829, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Treharris Street

How this home sits against its street.

144
graded homes
63.4
average score
D
most common grade
+5.6
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.