8 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
About 8 Clos Alyn
8 Clos Alyn is a three-bedroom semi-detached house in Pontprennau, Cardiff, Cardiff (CF23 8LB). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1976-1982 and council tax band E. The latest certificate (April 2015) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since December 2011. Between certificates, hot-water efficiency went from Average to Good; while wall efficiency dropped from Good to Average and roof efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from April 2015, so improvements made since then won't be reflected.
Across 2002–2013, sale prices on this property compounded at 3.9% per year. Today's modelled estimate of £295,000 sits 70.5% above the 2013 sale of £173,000. One planning record on file: an extension approved in 2021. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Last sold in May 2013, so it's been off the market for around 13 years.
What this property has
Inside
- Bedrooms3
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 13 Apr 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
More low energy lighting installed
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Planning history
8 Clos Alyn has an approved rear extension on the planning record.
1 application on record at 8 Clos Alyn, Pontprennau, Cardiff, CF23 8LB
- Oct 2021ConservatoryFullOutcome in report
Extension: Rear of property
ERECT A CONSERVATORY TO THE REAR ELEVATION
Extension- Documents
- 5 docs on file
- Reference
- 21/02012/DCH
Unlock 8 Clos Alyn, Pontprennau, Cardiff, CF23 8LB's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 5 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
8 Clos Alyn valuation sits well clear of the typical sold price in this postcode.
£295,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 11 years.
£173,000
Growth on file: 3.9% per year over 11 years.
Sales timeline
9 May 2013Most recent
£173,000
-2.3%over 6 years10 August 2006
£177,000
+53.9%over 3 years19 September 2002
£115,000
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
On price per m², 8 Clos Alyn runs well behind the street norm.
Price per m²
£1,922
Street avg £2,693
Floor Area
90 m²
Street avg 79 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.6 t/year
Street avg 3.0 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
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.







