15 Crystal Avenue, Cardiff, CF23 5QJ
About 15 Crystal Avenue
15 Crystal Avenue is a three-bedroom semi-detached house in Cardiff (CF23 5QJ). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (November 2019) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in January 2012 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Very Good, window efficiency went from Poor to Good and hot-water efficiency went from Average to Good; while lighting dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. Records show the property has been extended at some point in its history.
On the market in November 2015 and unlisted since — roughly 11 years. Across 2012–2015, sale prices on this property compounded at 12% per year. Today's modelled estimate of £419,000 is 40.6% above the 2015 sale price.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
Outside
- Private gardenYes
- GarageYes
Building
- Previously extendedYes
Everything you need to know about 15 Crystal Avenue
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Windows upgraded, improving insulation
Loft insulation upgraded to recommended levels
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Level 2 HomeBuyer Report
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Planning history
15 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
15 Crystal Avenue valuation sits well clear of the typical sold price in this postcode.
£419,000
Modelled from EPC, postcode comparables and a sale-price growth of 12.0% per year over 3 years.
£298,000
Growth on file: 12.0% per year over 3 years.
Sales timeline
27 November 2015Most recent
£298,000
+47.5%over 3 years24 June 2012
£202,000
Median price across the last 5 sales in CF23 5QJ: £345,000 (2024–2018).
Nearby sales in CF23 5QJ
Versus other Crystal Avenue homes
On co₂ emissions, 15 Crystal Avenue stands well clear of the street.
Price per m²
£3,010
Street avg £2,997
Floor Area
99 m²
Street avg 101 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.5 t/year
Street avg 4.6 t/year
Everything you need to know about 15 Crystal Avenue
The true value, the hidden risks and the full sale history, in one report.
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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.