1 Heol Penllwyn, Pentyrch, Cardiff, CF15 9PZ
About 1 Heol Penllwyn
1 Heol Penllwyn is a two-bedroom end-of-terrace house in Pentyrch, Cardiff, Cardiff (CF15 9PZ). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (August 2025) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since October 2013. Between certificates, roof efficiency went from Average to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 77). It has already been extended once and our model flags further extension potential, a sign of buyer flexibility.
Across 1999–2014, sale prices on this property compounded at 6.8% per year. Today's modelled estimate of £319,000 sits 94.8% above the 2014 sale of £163,750. Last sold in November 2014, so it's been off the market for around 12 years.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
Outside
- Private gardenSouth-facing
Building
- Previously extendedYes
- RefurbishedYes
- Extension potentialPossible
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
1 Heol Penllwyn 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 Heol Penllwyn has more than doubled in price since the earliest registered sale in 1999.
£319,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.8% per year over 15 years.
£163,750
Growth on file: 6.8% per year over 15 years.
Sales timeline
17 November 2014Most recent
£163,750
+173.1%over 15 years26 August 1999
£59,950
Median price across the last 3 sales in CF15 9PZ: £165,000 (2017–2004).
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pentyrch Cemetery — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







