4 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
About 4 Bryn Rhosyn
4 Bryn Rhosyn is a semi-detached house in Radyr, Cardiff, Cardiff (CF15 8RN). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1976-1982 and council tax band E. The latest certificate (March 2014) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 90), a 3-band jump. The latest certificate is from March 2014, so improvements made since then won't be reflected.
Held since May 2001 — that's 25 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £316,000 sits 216% above the 2001 sale of £99,995. On a £-per-square-foot basis, the last sale (£124/sq ft) was about 44% below the postcode norm.
Energy performance
4 Bryn Rhosyn sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 14 Mar 2024
EPC Rating
Certificate validity
Expired on 14 March 2024
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Planning history
4 Bryn Rhosyn 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
4 Bryn Rhosyn's estimated value is more than triple its earliest registered sale price (2001).
£316,000
Modelled from EPC, postcode comparables.
£99,995
Recorded with HM Land Registry.
Sales timeline
30 May 2001Most recent
£99,995
Median price across the last 5 sales in CF15 8RN: £262,500 (2025–2020).
Nearby sales in CF15 8RN
6 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
Sold Dec 2025
£350,00023 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
Sold Feb 2025
£360,0008 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
Sold Feb 2022
£260,00019 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
Sold Feb 2021
£257,0005 Bryn Rhosyn, Radyr, Cardiff, CF15 8RN
Sold Oct 2020
£262,500
Versus other Bryn Rhosyn homes
On epc rating, 4 Bryn Rhosyn runs well behind the street norm.
Price per m²
£1,333
Street avg £3,015
Floor Area
75 m²
Street avg 91 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.8 t/year
Street avg 3.7 t/year
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The neighbourhood at a glance
Crime
85/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pentwyn — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







