13 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
About 13 Clos Alyn
13 Clos Alyn is a detached house in Pontprennau, Cardiff, Cardiff (CF23 8LB). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (November 2021) shows a C (score 73). When first surveyed in December 2012 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 86).
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Low energy lighting percentage decreased
Wall insulation upgraded
More low energy lighting installed
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Planning history
13 Clos Alyn has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
13 Clos Alyn has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£383,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF23 8LB: £220,000 (2025–2019).
Nearby sales in CF23 8LB
21 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
Sold Sept 2025
£334,0003 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
Sold Jun 2023
£270,00033 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
Sold May 2022
£215,00023 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
Sold May 2021
£181,5005 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
Sold Nov 2019
£220,000
Versus other Clos Alyn homes
EPC Rating for 13 Clos Alyn runs comfortably ahead of the street norm.
EPC Rating
73 (C)
Street avg 67 (D)
Floor Area
98 m²
Street avg 79 m²
CO₂ Emissions
2.8 t/year
Street avg 3.0 t/year
Habitable Rooms
6 rooms
Street avg 5 rooms
Similar properties nearby
1 Clos Nant Mwlan, Pontprennau
CF23 8NA
1 Ambergate Drive, Pontprennau
CF23 8AX
1 Chamomile Close, Pontprennau
CF23 8RE
1 Blackberry Way, Pontprennau
CF23 8FE
1 Capel Edeyrn, Pontprennau
CF23 8XJ
1 Allt Y Wennol, Pontprennau
CF23 8AS
1 Clos Alyn, Pontprennau
CF23 8LB
1 Clos Nant Y Cwm, Pontprennau
CF23 8LG
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Sindercombe Cl — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







