10 Clos Hafren, St Mellons, Cardiff, CF3 0AW
About 10 Clos Hafren
10 Clos Hafren is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 0AW). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1996-2002 and council tax band B. The latest certificate (March 2023) shows a C (score 74). The rating has held steady at C across 2 certificates since June 2010. Between certificates, window efficiency went from Average to Good and lighting went from Very Poor to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 87).
It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs).
Energy performance
EPC Rating
Certificate validity
Valid until 22 March 2033
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Window efficiency improved
Floor insulation added or improved
More low energy lighting installed
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Planning history
10 Clos Hafren has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
10 Clos Hafren has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£192,000
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.
Versus other Clos Hafren homes
10 Clos Hafren outperforms the street on floor area by a wide margin.
EPC Rating
74 (C)
Street avg 80 (C)
Floor Area
77 m²
Street avg 71 m²
CO₂ Emissions
2.2 t/year
Street avg 1.6 t/year
Habitable Rooms
5 rooms
Street avg 4 rooms
Similar properties nearby
1 Caerleon Close, St Mellons
CF3 0HH
1 Ashfield Court, St Mellons
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1 Bulrush Close, St Mellons
CF3 0AZ
1 Caraway Close, St Mellons
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1 Blaina Close, St Mellons
CF3 0EB
1 Broadwell Close, St Mellons
CF3 0HU
1 Ashdown Close, St Mellons
CF3 0ER
1 Aspen Close, St Mellons
CF3 0BT
The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.3 km
Clos Gwlad-Yr-Haf — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







