11 Mathias Close, Penylan, Cardiff, CF23 9BE
About 11 Mathias Close
11 Mathias Close is a two-bedroom mid-terrace house in Penylan, Cardiff, Cardiff (CF23 9BE). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (September 2024) shows a C (score 73). When first surveyed in October 2008 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Average to Very Good and main heating went from Poor to Good. The recommended improvements would push it to B (score 88).
It hasn't traded since January 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1996–2008, sale prices on this property compounded at 10.1% per year. Today's modelled estimate of £233,000 sits 58.5% above the 2008 sale of £147,000.
What this property has
Inside
- Bedrooms2
- Dining roomYes
Outside
- Private gardenRear
- ParkingOff road
Building
- Heating systemElectric
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Get a survey for this property
Level 2 HomeBuyer Report
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Planning history
11 Mathias Close has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Sale price has at least doubled since 1996.
£233,000
Modelled from EPC, postcode comparables and a sale-price growth of 10.1% per year over 11 years.
£147,000
Growth on file: 10.1% per year over 11 years.
Sales timeline
25 January 2008Most recent
£147,000
+191.1%over 11 years4 December 1996
£50,500
Median price across the last 5 sales in CF23 9BE: £230,000 (2025–2021).
Nearby sales in CF23 9BE
1 Mathias Close, Penylan, Cardiff, CF23 9BE
Sold May 2025
£271,9506 Mathias Close, Penylan, Cardiff, CF23 9BE
Sold Jun 2023
£230,0004 Mathias Close, Penylan, Cardiff, CF23 9BE
Sold Feb 2023
£230,00021 Mathias Close, Penylan, Cardiff, CF23 9BE
Sold Sept 2022
£305,00015 Mathias Close, Penylan, Cardiff, CF23 9BE
Sold Oct 2021
£225,750
Versus other Mathias Close homes
EPC Rating for 11 Mathias Close runs comfortably ahead of the street norm.
Price per m²
£2,625
Street avg £3,298
Floor Area
56 m²
Street avg 60 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
1.8 t/year
Street avg 2.3 t/year
Similar properties nearby
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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
Colchester Avenue — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







