5 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
About 5 Caer Idwen
5 Caer Idwen is a detached house in Morganstown, Cardiff, Cardiff (CF15 8FZ). It has a recorded floor area of 163 m² (around 1755 sq ft), construction records dating it to 2012 onwards and council tax band H. The latest certificate (May 2026) returns a B (score 81), comfortably above the UK average. The rating has held steady at B across 2 certificates since March 2015. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition.
On the market in May 2015 and unlisted since — roughly 11 years. At 163 m² it's 18.9% smaller than the typical home in the postcode (201 m² median across 5 EPCs). Today's modelled estimate of £652,000 is 42% above the 2015 sale price.
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 10 May 2036
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Planning history
5 Caer Idwen 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
5 Caer Idwen valuation sits well clear of the typical sold price in this postcode.
£652,000
Modelled from EPC, postcode comparables.
£459,000
Recorded with HM Land Registry.
Sales timeline
28 May 2015Most recent
£459,000
Median price across the last 5 sales in CF15 8FZ: £495,995 (2021–2015).
Nearby sales in CF15 8FZ
1 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
Sold Jun 2021
£640,0009 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
Sold May 2021
£615,0003 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
Sold Apr 2015
£455,00011 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
Sold Mar 2015
£495,0007 Caer Idwen, Morganstown, Cardiff, CF15 8FZ
Sold Mar 2015
£472,000
Versus other Caer Idwen homes
On epc rating, 5 Caer Idwen runs well behind the street norm.
Price per m²
£2,816
Street avg £2,820
Floor Area
163 m²
Street avg 190 m²
CO₂ Emissions
2.8 t/year
Street avg 2.5 t/year
Years Held
11 years
Street avg 9 years
Similar properties nearby
1 Clos Harry Corner, Radyr
CF15 8GR
1 Clos Tylaway, Radyr
CF15 8DU
1 Bates Court, Radyr
CF15 8EJ
1 Clos Y Mynydd, Morganstown
CF15 8FH
1 Caer Idwen, Morganstown
CF15 8FZ
1 Cilfedw, Radyr
CF15 8AR
1 Caer Graig, Radyr
CF15 8RD
1 Bryncoed, Radyr
CF15 8RH
The neighbourhood at a glance
Crime
85/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Ffordd y Berllan — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







