12 Bryn Celyn, Cardiff, CF23 7EE
About 12 Bryn Celyn
12 Bryn Celyn is a three-bedroom end-of-terrace house in Cardiff (CF23 7EE). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (July 2020) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2010. Between certificates, window efficiency went from Average to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to C (score 80). Our model identifies extension potential, subject to local planning policy.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2001–2023, sale prices on this property compounded at 7.5% per year. On a £-per-square-foot basis, the last sale (£230/sq ft) was about 190.3% above the typical sold price in the postcode. Sold May 2023 for £210,000.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
- CloakroomYes
Outside
- Private gardenYes
- GarageYes
Building
- Central heatingYes
- RefurbishedYes
- Extension potentialPossible
Energy performance
12 Bryn Celyn sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Window efficiency improved
More low energy lighting installed
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Planning history
12 Bryn Celyn 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
Latest sale on 12 Bryn Celyn was the highest on Land Registry record across the postcode.
£225,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 22 years.
£210,000
Growth on file: 7.5% per year over 22 years.
Sales timeline
3 May 2023Most recent
£210,000
+86.7%over 7 years9 July 2015
£112,500
+156.0%over 13 years20 September 2001
£43,950
Median price across the last 5 sales in CF23 7EE: £116,000 (2023–2013).
Versus other Bryn Celyn homes
12 Bryn Celyn outperforms the street on price per m² by a wide margin.
Price per m²
£2,471
Street avg £1,012
Floor Area
85 m²
Street avg 92 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.3 t/year
Street avg 2.5 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
Pentwyn Leisure Centre — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







