10 Duncan Close, St Mellons, Cardiff, CF3 1NP
About 10 Duncan Close
10 Duncan Close is a three-bedroom semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NP). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (August 2024) shows a C (score 72). When first surveyed in May 2012 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 88). Other recorded features include attached land beyond the plot. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.
A recent sale: £265,000 in July 2025. Across 1997–2025, sale prices on this property compounded at 5.5% per year. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 82% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- GarageDetached
- LandYes
- Cul-de-sacYes
Building
- Extension potentialPossible
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
More low energy lighting installed
Get a survey for this property
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Planning history
10 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
Latest sale on 10 Duncan Close was the highest on Land Registry record across the postcode.
£270,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.5% per year over 28 years.
£265,000
Growth on file: 5.5% per year over 28 years.
Sales timeline
30 July 2025Most recent
£265,000
+52.3%over 6 years15 February 2019
£174,000
+194.9%over 21 years31 August 1997
£59,000
Median price across the last 5 sales in CF3 1NP: £240,000 (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
£245,00019 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Sept 2024
£212,5003 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Apr 2024
£188,000
Versus other Duncan Close homes
10 Duncan Close outperforms the street on price per m² by a wide margin.
Price per m²
£3,841
Street avg £2,761
Floor Area
69 m²
Street avg 65 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.2 t/year
Street avg 2.2 t/year
Similar properties nearby
1 Duncan Close, St Mellons
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1 Meadvale Court, Meadvale Road
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1 Dovey Close, Rumney
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1 Llanina Grove, Rumney
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1 Canopus Close, St Mellons
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1 Heol Newydd
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1 Bro Athro
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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
0.1 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.







