91 92, Flat 6, St Mary Street, Cardiff, CF10 1DX
About 91 92
91 92 is a semi-detached house in Cardiff (CF10 1DX). It has a recorded floor area of 69 m² (around 743 sq ft) and construction records dating it to 1900-1929. At 69 m² this is the 4th smallest of 11 units on EPC record in 91 92, where floor areas span 56–110 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (March 2022) shows an E (score 47), well below the UK norm with real room to improve. Earlier certificates rated it C (March 2009); the latest reading is 2 bands lower. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Good to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 69), a 2-band jump. Main heating runs on electricity.
At 69 m² it's 19.8% smaller than the typical home in the postcode (86 m² median across 26 EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 9 March 2032
Property Improvements
Changes detected from historical EPC data
Changed to a more efficient fuel source
Hot water system changed
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
91 92 has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
91 92 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£189,000
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.
Versus other St Mary Street homes
On epc rating, 91 92 runs well behind the street norm.
EPC Rating
47 (E)
Street avg 59 (D)
Floor Area
69 m²
Street avg 81 m²
CO₂ Emissions
3.5 t/year
Street avg 3.7 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
485/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Royal Hotel KJ — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







