12 Granville Avenue, Cardiff, CF5 1BW
About 12 Granville Avenue
12 Granville Avenue is a semi-detached house in Cardiff (CF5 1BW). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (February 2014) shows an E (score 41), well below the UK norm with real room to improve. The rating has held steady at E across 4 certificates since April 2009. Between certificates, lighting went from Average to Good and main heating went from Average to Good; while roof efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 81), a 3-band jump. The latest certificate is from February 2014, so improvements made since then won't be reflected.
Held since September 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £446,000 sits 78.4% above the 2009 sale of £250,000. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs).
Everything you need to know about 12 Granville Avenue
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
12 Granville Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 27 Feb 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Roof insulation improved
More low energy lighting installed
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Planning history
12 Granville Avenue has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£446,000
Modelled from EPC, postcode comparables.
£250,000
Recorded with HM Land Registry.
Sales timeline
10 September 2009Most recent
£250,000
Median price across the last 5 sales in CF5 1BW: £470,000 (2025–2016).
Nearby sales in CF5 1BW
Versus other Granville Avenue homes
EPC Rating for 12 Granville Avenue lags the street by a wide margin.
Price per m²
£2,294
Street avg £3,024
Floor Area
109 m²
Street avg 109 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
7.6 t/year
Street avg 4.8 t/year
Everything you need to know about 12 Granville Avenue
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
The Insole — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.