Flat 1, 135 Penarth Road, Cardiff, CF11 6JU
About Flat 1
Flat 1 is a mid-terrace house in Cardiff (CF11 6JU). It has a recorded floor area of 31 m² (around 334 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (August 2019) shows an E (score 48), well below the UK norm with real room to improve. The rating has held steady at E across 4 certificates since August 2015. Between certificates, hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity.
At 31 m² it sits well below the postcode median (69 m² across 19 EPCs), making it one of the more compact homes locally.
Everything you need to know about Flat 1
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 system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Low energy lighting percentage decreased
Wall insulation improved
More low energy lighting installed
Heating controls upgraded for better temperature management
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Flat 1 has no planning applications on record.
But the area is active
12 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 1 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£132,000
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 CF11 6JU: £185,000 (2023–2020).
Nearby sales in CF11 6JU
Versus other Penarth Road homes
On epc rating, Flat 1 runs well behind the street norm.
EPC Rating
48 (E)
Street avg 61 (D)
Floor Area
31 m²
Street avg 54 m²
CO₂ Emissions
2.3 t/year
Street avg 2.6 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Everything you need to know about Flat 1
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
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Blaenclydach Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.