1 Blaenavon Close, St Mellons, Cardiff, CF3 0HQ
About 1 Blaenavon Close
1 Blaenavon Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 0HQ). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (March 2016) shows a C (score 71). The recommended improvements would push it to B (score 87). The latest certificate is from March 2016, so improvements made since then won't be reflected.
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 30 Mar 2026
EPC Rating
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Planning history
1 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
1 Blaenavon Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£234,000
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 floor area, 1 Blaenavon Close runs well behind the street norm.
EPC Rating
71 (C)
Street avg 70 (C)
Floor Area
78 m²
Street avg 88 m²
CO₂ Emissions
2.5 t/year
Street avg 2.9 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Similar properties nearby
1 Birkdale Close, St Mellons
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1 Aston Place, St Mellons
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1 Chervil Close, St Mellons
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1 Aster Close, St Mellons
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1 Bodnant Close, St Mellons
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1 Brynmawr Close, St Mellons
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1 Chartley Close, St Mellons
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1 Ashdown Close, St Mellons
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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.







