31 Bryn Celyn, Cardiff, CF23 7EE
About 31 Bryn Celyn
31 Bryn Celyn is a four-bedroom mid-terrace house in Cardiff (CF23 7EE). It has a recorded floor area of 96 m² (around 1033 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (July 2024) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2014. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 88), a 2-band jump. Main heating runs on electricity.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2006–2013, sale prices on this property compounded at 7.2% per year. Today's modelled estimate of £191,000 sits 101.1% above the 2013 sale of £95,000. 13 years since the last transfer (June 2013).
What this property has
Inside
- Bedrooms4
- Bathrooms1
Outside
- DrivewayYes
Building
- RefurbishedYes
Energy performance
31 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 improved
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
31 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
31 Bryn Celyn's estimated value is more than triple its earliest registered sale price (2006).
£191,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.2% per year over 7 years.
£95,000
Growth on file: 7.2% per year over 7 years.
Sales timeline
13 June 2013Most recent
£95,000
+61.7%over 6 years11 July 2006
£58,750
Median price across the last 5 sales in CF23 7EE: £150,000 (2023–2015).
Versus other Bryn Celyn homes
31 Bryn Celyn is notably below the street on co₂ emissions.
Price per m²
£990
Street avg £1,161
Floor Area
96 m²
Street avg 92 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.5 t/year
Street avg 2.4 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.







