3 Syon Park Close, St Mellons, Cardiff, CF3 0BN
About 3 Syon Park Close
3 Syon Park Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 0BN). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1991-1995 and council tax band A. The latest certificate (January 2025) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since April 2014. Between certificates, lighting went from Very Poor to Very Good. At 44 m² this is the 5th smallest of 39 units on EPC record in the building, where floor areas span 33–90 m².
At 44 m² it sits well below the postcode median (66 m² across 38 EPCs), making it one of the more compact homes locally.
Energy performance
3 Syon Park Close's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 10 January 2035
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
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Planning history
3 Syon Park 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
3 Syon Park Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£118,000
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 Syon Park Close homes
EPC Rating
75 (C)
Street avg 75 (C)
Floor Area
44 m²
Street avg 43 m²
CO₂ Emissions
1.3 t/year
Street avg 1.5 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Similar properties nearby
1 Broadlands Court, St Mellons
CF3 0BZ
1 Brookfield Drive, St Mellons
CF3 0BA
1 Caspian Close, St Mellons
CF3 0BQ
1 Aspen Close, St Mellons
CF3 0BT
1 Caerleon Close, St Mellons
CF3 0HH
1 Ashfield Court, St Mellons
CF3 0AE
1 Bulrush Close, St Mellons
CF3 0AZ
1 Caraway Close, St Mellons
CF3 0NF
The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.3 km
Kwik Save — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







