21 Thornhill Road, Cardiff CF14 6PD

Semi-Detached house · Built 1930-1949 · 124 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Solar photovoltaic panels(optional, beyond C)£3,500 – £5,500£2550+ yrs+4.9 pts
Solar water heating(optional, beyond C)£4,000 – £6,000£2150+ yrs+4.1 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

£1,501
per year at grade C
£1,455
per year at grade C

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £884 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

16 November 2022£575,000
12 June 2008£227,500
24 May 2006£230,000

Estimated today: £588,107 HPI-indexed estimate, not a valuation

Thornhill Road: 79 sales since 1995 · £384,396 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.

5
crimes a month
40
in the last 12 months
Public order
most common · 25% of the total

Police.uk street-level data for LSOA W01001850, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Thornhill Road

How this home sits against its street.

57
graded homes
63.2
average score
D
most common grade
+6.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.