12 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
About 12 Arnold Avenue
12 Arnold Avenue is a two-bedroom semi-detached house in Llanrumney, Cardiff, Cardiff (CF3 5PP). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (August 2016) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 79), a 2-band jump. Other recorded features include a loft.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2001–2017, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £203,000 sits 59.2% above the 2017 sale of £127,500. On a £-per-square-foot basis, the last sale (£133/sq ft) was about 18.5% above the typical sold price in the postcode. On the market in June 2017 and unlisted since — roughly 9 years.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
- LoftYes
Outside
- Private gardenRear
- DrivewayYes
Energy performance
12 Arnold Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
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Planning history
12 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
12 Arnold Avenue has more than tripled in price since its earliest registered sale in 2001.
£203,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 16 years.
£127,500
Growth on file: 7.3% per year over 16 years.
Sales timeline
29 June 2017Most recent
£127,500
+27.5%over 10 years24 August 2006
£100,000
+137.5%over 4 years9 November 2001
£42,110
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
£127,5008 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Feb 2017
£125,0007 Arnold Avenue, Llanrumney, Cardiff, CF3 5PP
Sold Sept 2013
£111,000
Versus other Arnold Avenue homes
EPC Rating for 12 Arnold Avenue lags the street by a wide margin.
Price per m²
£1,433
Street avg £1,551
Floor Area
89 m²
Street avg 76 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
5.3 t/year
Street avg 2.9 t/year
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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.







