5 Canopus Close, St Mellons, Cardiff, CF3 1NR
About 5 Canopus Close
5 Canopus Close is a detached house in St. Mellons, Cardiff, Cardiff (CF3 1NR). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1991-1995 and council tax band E. The latest certificate (August 2016) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2010. Between certificates, lighting went from Poor to Good and main heating went from Average to Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 82), a 2-band jump. The latest certificate is from August 2016, so improvements made since then won't be reflected.
At 120 m² the property is well over the postcode median (69 m² across 16 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 88% of similar EPCs). Across 2000–2016, sale prices on this property compounded at 4.8% per year. Today's modelled estimate of £316,000 sits 50.5% above the 2016 sale of £209,950. Last sold in October 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 20 Aug 2026
EPC Rating
Certificate validity
Expired on 20 August 2026
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 2 HomeBuyer Report
We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.
From £595 · Includes VAT
Planning history
5 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
5 Canopus Close has more than doubled in price since the earliest registered sale in 2000.
£316,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.8% per year over 16 years.
£209,950
Growth on file: 4.8% per year over 16 years.
Sales timeline
20 October 2016Most recent
£209,950
-6.7%9 June 2016
£225,000
+17.2%over 4 years21 July 2011
£192,000
+97.9%over 11 years29 June 2000
£97,000
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
EPC Rating for 5 Canopus Close lags the street by a wide margin.
Price per m²
£1,750
Street avg £2,460
Floor Area
120 m²
Street avg 68 m²
Habitable Rooms
8 rooms
Street avg 4 rooms
CO₂ Emissions
5.4 t/year
Street avg 2.1 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.







