9 Canopus Close, St Mellons, Cardiff, CF3 1NR
About 9 Canopus Close
9 Canopus Close is a three-bedroom semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NR). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 1996-2002 and council tax band D. The latest certificate (September 2023) shows a C (score 74). The rating has held steady at C across 2 certificates since September 2012. Between certificates, lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 88).
Across 2014–2021, sale prices on this property compounded at 6.5% per year. Today's modelled estimate of £267,000 is 24.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£274/sq ft) was about 76.4% above the typical sold price in the postcode. Last sale on file: £215,000 in June 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Outside
- Private gardenYes
- ParkingOff road
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Floor insulation added or improved
Low energy lighting percentage decreased
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Planning history
9 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
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£267,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.5% per year over 7 years.
£215,000
Growth on file: 6.5% per year over 7 years.
Sales timeline
22 June 2021Most recent
£215,000
+56.4%over 7 years26 May 2014
£137,500
Median price across the last 5 sales in CF3 1NR: £215,000 (2024–2021).
Nearby sales in CF3 1NR
13 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Apr 2024
£290,0008 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Mar 2023
£233,00024 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Jan 2023
£169,00026 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Nov 2021
£166,00025 Canopus Close, St Mellons, Cardiff, CF3 1NR
Sold Sept 2021
£215,000
Versus other Canopus Close homes
9 Canopus Close outperforms the street on habitable rooms by a wide margin.
Price per m²
£2,945
Street avg £2,183
Floor Area
73 m²
Street avg 70 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.2 t/year
Street avg 2.4 t/year
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1 Canopus 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
0.2 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.







