4 Blaenavon Close, St Mellons, Cardiff, CF3 0HQ
About 4 Blaenavon Close
4 Blaenavon Close is a mid-terrace house in St. Mellons, Cardiff, Cardiff (CF3 0HQ). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (June 2013) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 90), a 3-band jump. The latest certificate is from June 2013, so improvements made since then won't be reflected.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
Energy performance
4 Blaenavon Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 04 Jun 2023
EPC Rating
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Planning history
4 Blaenavon 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
4 Blaenavon Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£201,000
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 3 sales in CF3 0HQ: £145,000 (2022–2000).
Versus other Blaenavon Close homes
On epc rating, 4 Blaenavon Close runs well behind the street norm.
EPC Rating
54 (E)
Street avg 71 (C)
Floor Area
87 m²
Street avg 88 m²
CO₂ Emissions
4.8 t/year
Street avg 2.8 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Similar properties nearby
1 Caraway Close, St Mellons
CF3 0NF
1 Blaina Close, St Mellons
CF3 0EB
1 Bulrush Close, St Mellons
CF3 0AZ
1 Cathcob Close, St Mellons
CF3 0AH
1 Broadwell Close, St Mellons
CF3 0HU
1 Abernethy Close, St Mellons
CF3 0SB
1 Caerleon Close, St Mellons
CF3 0HH
1 Ashfield Court, St Mellons
CF3 0AE
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
Meddygfa Willowbrook Surgery — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







