Swyn Y Garth, Mountain Road, Pentyrch, Cardiff, CF15 9QP
About Swyn Y Garth
Swyn Y Garth is a detached house in Pentyrch, Cardiff, Cardiff (CF15 9QP). It has a recorded floor area of 129 m² (around 1389 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (February 2018) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 79).
At 129 m² it sits well below the postcode median (197 m² across 11 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £617,000 is 45.2% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£306/sq ft) was about 146% above the typical sold price in the postcode. Sold July 2018 for £425,000.
Energy performance
EPC Rating
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Planning history
Swyn Y Garth 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
Swyn Y Garth valuation sits well clear of the typical sold price in this postcode.
£617,000
Modelled from EPC, postcode comparables.
£425,000
Recorded with HM Land Registry.
Sales timeline
18 July 2018Most recent
£425,000
Median price across the last 5 sales in CF15 9QP: £300,000 (2025–2021).
Nearby sales in CF15 9QP
Blaen Bielly Farm, Mountain Road, Pentyrch, Cardiff, CF15 9QP
Sold Jan 2025
£800,000Pen Y Pentref, Mountain Road, Pentyrch, Cardiff, CF15 9QP
Sold Jun 2022
£163,000Warren House, Mountain Road, Pentyrch, Cardiff, CF15 9QP
Sold Nov 2021
£750,0003 Brynteg Court, Mountain Road, Pentyrch, Cardiff, CF15 9QP
Sold Jun 2021
£162,000Calon Y Garth, Mountain Road, Pentyrch, Cardiff, CF15 9QP
Sold Feb 2021
£300,000
Versus other Mountain Road homes
Swyn Y Garth outperforms the street on price per m² by a wide margin.
Price per m²
£3,295
Street avg £2,403
Floor Area
129 m²
Street avg 235 m²
Habitable Rooms
6 rooms
Street avg 8 rooms
CO₂ Emissions
5.9 t/year
Street avg 8.9 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Pentyrch Shops — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







