1 Duncan Close, St Mellons, Cardiff, CF3 1NP
About 1 Duncan Close
1 Duncan Close is a three-bedroom semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NP). It has a recorded floor area of 70 m² (around 753 sq ft), construction records dating it to 1996-2002 and council tax band D. Tenure is freehold. The latest certificate (September 2023) shows a C (score 72). The rating has held steady at C across 2 certificates since June 2012. Between certificates, lighting dropped from Good to Average. The recommended improvements would push it to B (score 87). The home occupies a cul-de-sac position.
It changed hands recently, sold October 2025 for £240,000. Across 2019–2025, sale prices on this property compounded at 4.1% per year. On a £-per-square-foot basis, the last sale (£319/sq ft) was about 64.9% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
Outside
- Private gardenYes
- GarageYes
- Cul-de-sacYes
Building
- TenureFreehold
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Floor insulation added or improved
Low energy lighting percentage decreased
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Planning history
1 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
1 Duncan Close valuation sits well clear of the typical sold price in this postcode.
£239,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.1% per year over 7 years.
£240,000
Growth on file: 4.1% per year over 7 years.
Sales timeline
23 October 2025Most recent
£240,000
+31.5%over 6 years11 January 2019
£182,500
Median price across the last 5 sales in CF3 1NP: £245,000 (2025–2024).
Nearby sales in CF3 1NP
2 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
£212,5003 Duncan Close, St Mellons, Cardiff, CF3 1NP
Sold Apr 2024
£188,000
Versus other Duncan Close homes
1 Duncan Close is notably below the street on years held.
Price per m²
£3,429
Street avg £2,787
Floor Area
70 m²
Street avg 65 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.0 t/year
Street avg 2.2 t/year
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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.







