12 Clydach Street, Cardiff, CF11 7AE
About 12 Clydach Street
12 Clydach Street is an end-of-terrace house in Cardiff (CF11 7AE). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1930-1949 and council tax band C. At 69 m² this is the 4th smallest of 14 units on EPC record in the building, where floor areas span 44–142 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (November 2025) shows a C (score 72). The rating has held steady at C across 5 certificates since July 2013. Between certificates, lighting dropped from Good to Poor.
Untraded for 27 years, with the last transfer in July 1999. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £158,000 sits 295% above the 1999 sale of £40,000. On a £-per-square-foot basis, the last sale (£54/sq ft) was about 43.3% below the postcode norm. At 69 m² it sits well below the postcode median (100 m² across 13 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 77% of similar EPCs).
Everything you need to know about 12 Clydach Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system upgraded
Window efficiency improved
Cavity wall insulation installed
More low energy lighting installed
Heating controls upgraded for better temperature management
More low energy lighting installed
Heating controls changed
Low energy lighting percentage decreased
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Planning history
12 Clydach Street has no planning applications on record.
But the area is active
8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Clydach Street's estimated value is more than triple its earliest registered sale price (1999).
£158,000
Modelled from EPC, postcode comparables.
£40,000
Recorded with HM Land Registry.
Sales timeline
12 July 1999Most recent
£40,000
Median price across the last 5 sales in CF11 7AE: £177,500 (2019–2011).
Nearby sales in CF11 7AE
Versus other Clydach Street homes
On epc rating, 12 Clydach Street stands well clear of the street.
EPC Rating
72 (C)
Street avg 53 (E)
Floor Area
69 m²
Street avg 57 m²
CO₂ Emissions
2.0 t/year
Street avg 3.6 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Everything you need to know about 12 Clydach Street
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
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Stockland Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.