21 Orchid Close, St. Mellons, Cardiff CF3 0RE

Mid-Terrace house · Built 1996-2002 · 50 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

C → A for £12,100 · £6,050 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Band A condensing boiler—£2,200 – £3,000£3650+ yrs+5.0 pts
Solar photovoltaic panels—£3,500 – £5,500£5450+ yrs+7.6 pts · reaches B
Solar water heating—£4,000 – £6,000£4550+ yrs+6.4 pts · reaches A

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

£715
per year at grade C
£580
per year at grade A

The full plan saves £135 a year — a 1.1% annual return on £12,100.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £424 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

3 October 2025£155,000
4 May 2018£106,000
27 October 2014£96,500
22 November 2012£86,500
26 March 2010£85,500
18 February 2000£37,250
26 February 1999£35,950

Estimated today: £156,206 HPI-indexed estimate, not a valuation

Orchid Close: 108 sales since 1995 · £149,910 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.

7.3
crimes a month
73
in the last 12 months
Violence and sexual offences
most common · 41% of the total

Police.uk street-level data for LSOA W01001882, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Orchid Close

How this home sits against its street.

31
graded homes
67
average score
D
most common grade
+6.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.