12 Old Hill, Old St Mellons, Cardiff, CF3 5SU
About 12 Old Hill
12 Old Hill is a four-bedroom detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5SU). It has a recorded floor area of 149 m² (around 1604 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (February 2026) shows a C (score 70). This certificate was lodged in the last six months, so the rating reflects current condition.
It hasn't traded since October 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 149 m² the property is well over the postcode median (79 m² across 8 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Today's modelled estimate of £250,000 is 19% above the 2007 sale price.
What this property has
Inside
- Bedrooms4
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
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Planning history
12 Old Hill 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
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£250,000
Modelled from EPC, postcode comparables.
£210,000
Recorded with HM Land Registry.
Sales timeline
25 October 2007Most recent
£210,000
Median price across the last 5 sales in CF3 5SU: £157,000 (2021–2007).
Nearby sales in CF3 5SU
6 Old Hill, Old St Mellons, Cardiff, CF3 5SU
Sold Oct 2021
£205,00017 Old Hill, Old St Mellons, Cardiff, CF3 5SU
Sold Apr 2018
£300,0003 Old Hill, Old St Mellons, Cardiff, CF3 5SU
Sold Apr 2011
£105,0007 Old Hill, Old St Mellons, Cardiff, CF3 5SU
Sold May 2009
£115,0008 Old Hill, Old St Mellons, Cardiff, CF3 5SU
Sold Dec 2007
£157,000
Versus other Old Hill homes
On floor area, 12 Old Hill stands well clear of the street.
Price per m²
£1,409
Street avg £2,108
Floor Area
149 m²
Street avg 87 m²
Habitable Rooms
8 rooms
Street avg 5 rooms
CO₂ Emissions
3.6 t/year
Street avg 3.9 t/year
Similar properties nearby
1 Axbridge Crescent, Llanrumney
CF3 5TJ
1 Brendon Close, Llanrumney
CF3 5RJ
1 Courtenay Close, Old St Mellons
CF3 5UL
1 Banwell Place, Llanrumney
CF3 5SH
1 Bronte Close, Llanrumney
CF3 5PN
1 Bluebell Drive
CF3 5RA
1 Captain S View, Braunton Crescent, Llanrumney
CF3 5AD
1 Chapel Row Lane, Old St Mellons
CF3 5ST
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
0.2 km
The Mount — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







