5 Ashdown Close, St Mellons, Cardiff, CF3 0ER
About 5 Ashdown Close
5 Ashdown Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 0ER). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (September 2025) shows a C (score 70). When first surveyed in July 2010 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Good and main heating went from Average to Good; while window efficiency dropped from Good to Average.
It changed hands recently, sold May 2026 for £220,000. On a £-per-square-foot basis, the last sale (£365/sq ft) was about 135.7% above the typical sold price in the postcode.
Energy performance
EPC Rating
Certificate validity
Valid until 14 September 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
5 Ashdown 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
5 Ashdown Close valuation sits well clear of the typical sold price in this postcode.
£234,000
Modelled from EPC, postcode comparables.
£220,000
Recorded with HM Land Registry.
Sales timeline
4 May 2026Most recent
£220,000
Median price across the last 5 sales in CF3 0ER: £172,000 (2026–2015).
Versus other Ashdown Close homes
Floor Area for 5 Ashdown Close lags the street by a wide margin.
Price per m²
£3,929
Street avg £3,207
Floor Area
56 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.3 t/year
Similar properties nearby
1 Bodnant Close, St Mellons
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1 Chervil Close, St Mellons
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1 Birkdale Close, St Mellons
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1 Chartley Close, St Mellons
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1 Abernethy Close, St Mellons
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1 Blaenavon Close, St Mellons
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1 Brynmawr Close, St Mellons
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1 Caradoc Close, St Mellons
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The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Coleford Drive — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







