4 Canopus Close, St Mellons, Cardiff, CF3 1NR
About 4 Canopus Close
4 Canopus Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NR). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (May 2026) shows a C (score 76), near the top of the C band. The recommended improvements would push it to B (score 89). This certificate was lodged in the last six months, so the rating reflects current condition.
It hasn't traded since March 2002, a hold of 24 years that's notably long for the area. Across 2000–2002, sale prices on this property compounded at 17.1% per year. Today's modelled estimate of £241,000 sits 232.4% above the 2002 sale of £72,500. On a £-per-square-foot basis, the last sale (£99/sq ft) was about 39.1% below the postcode norm.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 31 May 2036
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Planning history
4 Canopus Close has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
4 Canopus Close's modelled value sits at over four times its earliest registered sale price (2000).
£241,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.1% per year over 2 years.
£72,500
Growth on file: 17.1% per year over 2 years.
Sales timeline
8 March 2002Most recent
£72,500
+31.8%over 1 year8 June 2000
£55,000
Median price across the last 5 sales in CF3 1NR: £233,000 (2026–2023).
Nearby sales in CF3 1NR
2 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Apr 2026
£289,0001 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Dec 2025
£180,00026 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Nov 2025
£220,00013 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Apr 2024
£290,0008 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Mar 2023
£233,000
Versus other Canopus Close homes
4 Canopus Close outperforms the street on years held by a wide margin.
Price per m²
£1,066
Street avg £2,503
Floor Area
68 m²
Street avg 71 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
1.7 t/year
Street avg 2.4 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Ty Coch Court — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







