9 Crystal Avenue, Cardiff, CF23 5QJ
About 9 Crystal Avenue
9 Crystal Avenue is a semi-detached house in Cardiff (CF23 5QJ). It has a recorded floor area of 90 m² (around 967 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (January 2012) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 71). The latest certificate is from January 2012, so improvements made since then won't be reflected.
Across 2008–2012, sale prices on this property compounded at 1.6% per year. Today's modelled estimate of £363,000 sits 51.2% above the 2012 sale of £240,000. 14 years since the last transfer (March 2012).
Energy performance
9 Crystal Avenue's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 17 Jan 2022
EPC Rating
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Planning history
9 Crystal Avenue 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
9 Crystal Avenue valuation sits well clear of the typical sold price in this postcode.
£363,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.6% per year over 4 years.
£240,000
Growth on file: 1.6% per year over 4 years.
Sales timeline
21 March 2012Most recent
£240,000
+6.7%over 3 years10 April 2008
£225,000
Median price across the last 5 sales in CF23 5QJ: £345,000 (2024–2018).
Nearby sales in CF23 5QJ
Versus other Crystal Avenue homes
Price per m² for 9 Crystal Avenue lags the street by a wide margin.
Price per m²
£2,671
Street avg £3,031
Floor Area
90 m²
Street avg 102 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.6 t/year
Street avg 4.6 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Heath High Level Rail Station — railway station.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







