1 Brynheulog, Pentwyn, Cardiff, CF23 7JA
About 1 Brynheulog
1 Brynheulog is an end-of-terrace house in Pentwyn, Cardiff, Cardiff (CF23 7JA). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (April 2021) shows a C (score 70). The rating has held steady at C across 2 certificates since August 2014. Between certificates, window efficiency went from Average to Good. The recommended improvements would push it to B (score 87).
A recent sale: £175,000 in November 2025. Across 1997–2025, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £195,000 is 11.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£183/sq ft) was about 57.6% above the typical sold price in the postcode.
Energy performance
EPC Rating
Certificate validity
Valid until 21 April 2031
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
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Planning history
1 Brynheulog 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
Price for 1 Brynheulog has grown more than fourfold since the 1997 starting point.
£195,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 28 years.
£175,000
Growth on file: 7.3% per year over 28 years.
Sales timeline
6 November 2025Most recent
£175,000
+218.2%over 23 years7 August 2002
£55,000
+129.2%over 5 years30 July 1997
£24,000
Median price across the last 5 sales in CF23 7JA: £155,000 (2024–2018).
Nearby sales in CF23 7JA
10 Brynheulog, Pentwyn, Cardiff, CF23 7JA
Sold May 2024
£155,00016 Brynheulog, Pentwyn, Cardiff, CF23 7JA
Sold Jul 2022
£125,00013 Brynheulog, Pentwyn, Cardiff, CF23 7JA
Sold Jul 2021
£165,00023 Brynheulog, Pentwyn, Cardiff, CF23 7JA
Sold Oct 2018
£156,00015 Brynheulog, Pentwyn, Cardiff, CF23 7JA
Sold Aug 2018
£90,950
Versus other Brynheulog homes
On years held, 1 Brynheulog runs well behind the street norm.
Price per m²
£1,966
Street avg £1,373
Floor Area
89 m²
Street avg 88 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.0 t/year
Street avg 2.8 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
St Bernardettes — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







