4 The Dell, St. Mellons, Cardiff CF3 5DL

Mid-Terrace house · 1976-1982 · Boiler and radiators, mains gas

Upgrade Plan

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MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation(optional, beyond C)£225typical£827.5 yrs+0.6 pts
Low energy lighting(optional, beyond C)£20 – £45typical£143.2 yrs+0.1 pts
Wind turbine(optional, beyond C)£2,750typical£1450+ yrs+1.1 pts
Band A condensing boiler(optional, beyond C)£2,600typical£1150+ yrs+0.8 pts
Solar water heating(optional, beyond C)£5,000typical£1350+ yrs+1.1 pts
Solar photovoltaic panels(optional, beyond C)£4,500 – £9,000typical£1650+ yrs+1.3 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£423
per year at grade C
£360
per year at grade C

Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.

Sold prices

28 August 2015£76,000
21 October 2005£94,950
30 July 2004£79,950
17 April 2003£57,000
29 July 2002£49,950
24 August 2000£33,950

Estimated today: £119,116 HPI-indexed estimate, not a valuation

The Dell: 103 sales since 1995 · £122,675 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.

6
crimes a month
66
in the last 12 months
Violence and sexual offences
most common · 33% of the total

Police.uk street-level data for LSOA W01002017, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

The Dell

How this home sits against its street.

32
graded homes
70.2
average score
C
most common grade
+2.8
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.