18 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
About 18 Arnold Avenue
18 Arnold Avenue is a semi-detached house in Llanrumney, Cardiff, Cardiff (CF3 5PP). It has a recorded floor area of 92 m² (around 990 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (July 2013) shows a G (score 18), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 80), a 4-band jump. Main heating runs on to be used only when there is no heating/hot. The latest certificate is from July 2013, so improvements made since then won't be reflected.
At 92 m² it's 16.5% larger than the typical home in the postcode (79 m² median across 28 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
Energy performance
18 Arnold Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 09 Jul 2023
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
18 Arnold Avenue has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
18 Arnold Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£165,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF3 5PP: £149,500 (2025–2017).
Nearby sales in CF3 5PP
2 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold May 2025
£270,0006 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Jul 2024
£225,00013 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Sept 2018
£127,50012 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Jun 2017
£127,5008 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Feb 2017
£125,000
Versus other Arnold Avenue homes
EPC Rating for 18 Arnold Avenue lags the street by a wide margin.
EPC Rating
18 (G)
Street avg 68 (D)
Floor Area
92 m²
Street avg 76 m²
CO₂ Emissions
7.9 t/year
Street avg 2.8 t/year
Habitable Rooms
6 rooms
Street avg 4 rooms
Similar properties nearby
1 Boswell Close, Llanrumney
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1 Bunyan Close, Llanrumney
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1 Barnstaple Road, Llanrumney
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1 Bluebell Drive
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1 Bridgwater Road, Llanrumney
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1 Bronte Close, Llanrumney
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1 Banwell Place, Llanrumney
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Hazlitt Close — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







