11 Blaenavon Close, St Mellons, Cardiff, CF3 0HQ
About 11 Blaenavon Close
11 Blaenavon Close is a mid-terrace house in St. Mellons, Cardiff, Cardiff (CF3 0HQ). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (September 2013) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 90), a 2-band jump. The latest certificate is from September 2013, so improvements made since then won't be reflected.
It lags the bulk of the postcode on energy efficiency (less efficient than 81% of similar EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 01 Sept 2023
EPC Rating
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Planning history
11 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
11 Blaenavon Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£200,000
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
EPC Rating for 11 Blaenavon Close lags the street by a wide margin.
EPC Rating
67 (D)
Street avg 70 (C)
Floor Area
88 m²
Street avg 88 m²
CO₂ Emissions
3.2 t/year
Street avg 2.9 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.







