14 Mallard Close, St Mellons, Cardiff, CF3 0AJ
About 14 Mallard Close
14 Mallard Close is an end-of-terrace house in St. Mellons, Cardiff, Cardiff (CF3 0AJ). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (July 2026) shows a C (score 77), near the top of the C band. The rating has held steady at C across 3 certificates since March 2015. Between certificates, roof efficiency went from Average to Very Good; while window efficiency dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition.
At 87 m² the property is well over the postcode median (53 m² across 12 EPCs), placing it in the larger end of the local stock.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 2 July 2036
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Window efficiency improved
Loft insulation upgraded to recommended levels
Solar PV panels (35 kWp) installed
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Planning history
14 Mallard Close 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
14 Mallard Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£199,000
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 4 sales in CF3 0AJ: £70,975 (2005–1996).
Versus other Mallard Close homes
14 Mallard Close outperforms the street on floor area by a wide margin.
EPC Rating
77 (C)
Street avg 79 (C)
Floor Area
87 m²
Street avg 80 m²
CO₂ Emissions
1.9 t/year
Street avg 1.8 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Similar properties nearby
1 Bulrush Close, St Mellons
CF3 0AZ
1 Ashfield Court, St Mellons
CF3 0AE
1 Caraway Close, St Mellons
CF3 0NF
1 Blaina Close, St Mellons
CF3 0EB
1 Caerleon Close, St Mellons
CF3 0HH
1 Broadwell Close, St Mellons
CF3 0HU
1 Ashdown Close, St Mellons
CF3 0ER
1 Cathcob Close, St Mellons
CF3 0AH
The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Tarwick Drive — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







