7 Leon Avenue, Taffs Well, Cardiff, CF15 7RG
About 7 Leon Avenue
7 Leon Avenue is a semi-detached house in Taffs Well, Cardiff, Cardiff (CF15 7RG). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (March 2025) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in October 2013 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average, window efficiency went from Poor to Good and hot-water efficiency went from Poor to Good. The recommended improvements would lift it to B (score 81), a 2-band jump.
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 system upgraded
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
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Planning history
7 Leon 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
7 Leon Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£264,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF15 7RG: £170,000 (2025–2004).
Versus other Leon Avenue homes
EPC Rating for 7 Leon Avenue runs comfortably ahead of the street norm.
EPC Rating
63 (D)
Street avg 57 (D)
Floor Area
85 m²
Street avg 88 m²
CO₂ Emissions
3.9 t/year
Street avg 4.5 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Taffs Well Railway Station — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







