3 Duncan Close, St Mellons, Cardiff, CF3 1NP
About 3 Duncan Close
3 Duncan Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NP). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (April 2016) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 88). The latest certificate is from April 2016, so improvements made since then won't be reflected.
Last sale on file: £188,000 in April 2024. Across the public record there are 7 sales, relatively high churn for a single property. Across 2001–2024, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £208,000 is 10.6% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£306/sq ft) was about 61.1% above the typical sold price in the postcode. At 57 m² it's 16.2% smaller than the typical home in the postcode (68 m² median across 17 EPCs).
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 13 Apr 2026
EPC Rating
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Planning history
3 Duncan 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
3 Duncan Close has more than tripled in price since its earliest registered sale in 2001.
£208,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.3% per year over 22 years.
£188,000
Growth on file: 5.3% per year over 22 years.
Sales timeline
25 April 2024Most recent
£188,000
+17.5%over 4 years27 May 2019
£159,995
+3.2%29 March 2019
£155,000
+3.3%over 2 years7 July 2016
£150,000
+15.4%over 8 years26 July 2007
£129,950
+94.9%over 5 years2 May 2002
£66,680
+13.0%2 November 2001
£59,000
Median price across the last 5 sales in CF3 1NP: £245,000 (2025–2024).
Nearby sales in CF3 1NP
1 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Oct 2025
£240,0002 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Aug 2025
£250,00023 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Aug 2025
£245,00010 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Jul 2025
£265,00019 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Sept 2024
£212,500
Versus other Duncan Close homes
On habitable rooms, 3 Duncan Close runs well behind the street norm.
Price per m²
£3,298
Street avg £2,795
Floor Area
57 m²
Street avg 66 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
2.0 t/year
Street avg 2.2 t/year
Similar properties nearby
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
0.1 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.







