1 Alderwood Close, St Mellons, Cardiff, CF3 0BW
About 1 Alderwood Close
1 Alderwood Close is a detached house in St. Mellons, Cardiff, Cardiff (CF3 0BW). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (June 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2011. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 82), a 2-band jump.
Most recent transfer was November 2025 at £385,000 — fresh data. At 85 m² it's 27.4% larger than the typical home in the postcode (67 m² median across 7 EPCs). Across 2011–2025, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£421/sq ft) was about 83.8% above the typical sold price in the postcode.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 10 June 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Window efficiency improved
More low energy lighting installed
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Planning history
1 Alderwood 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 Alderwood Close has more than doubled in price since the earliest registered sale in 2011.
£390,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 14 years.
£385,000
Growth on file: 6.1% per year over 14 years.
Sales timeline
7 November 2025Most recent
£385,000
+130.5%over 14 years25 September 2011
£167,000
Median price across the last 5 sales in CF3 0BW: £375,000 (2024–2011).
Nearby sales in CF3 0BW
12 Alderwood Close, St Mellons, Cardiff, CF3 0BW
Sold Jun 2024
£500,0004 Alderwood Close, St Mellons, Cardiff, CF3 0BW
Sold Nov 2016
£207,00011 Alderwood Close, St Mellons, Cardiff, CF3 0BW
Sold May 2016
£437,0002 Alderwood Close, St Mellons, Cardiff, CF3 0BW
Sold Dec 2011
£135,0006 Alderwood Close, St Mellons, Cardiff, CF3 0BW
Sold Nov 2009
£135,000
Versus other Alderwood Close homes
Price per m² for 1 Alderwood Close runs comfortably ahead of the street norm.
Price per m²
£4,529
Street avg £2,352
Floor Area
85 m²
Street avg 89 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
3.0 t/year
Street avg 2.8 t/year
Similar properties nearby
1 Brown Court, St Mellons
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1 Burreed Close
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The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Llaneirwg Way — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







