91 92, Flat 4, St Mary Street, Cardiff, CF10 1DX
About 91 92
91 92 is a mid-terrace house in Cardiff (CF10 1DX). It has a recorded floor area of 90 m² (around 969 sq ft) and construction records dating it to 1900-1929. At 90 m² this is the 6th smallest of 10 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 top. The latest certificate (January 2025) shows a C (score 73). When first surveyed in March 2009 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Very Good and main heating went from Very Poor to Good; while wall efficiency dropped from Good to Very Poor. The recommended improvements would push it to B (score 82).
Its energy rating outperforms most of the postcode (better than 84% of similar EPCs).
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Heating controls upgraded for better temperature management
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.
£199,000
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 1 sales in CF10 1DX: £9,035,388 (2021–2021).
Nearby sales in CF10 1DX
Versus other St Mary Street homes
On epc rating, 91 92 stands well clear of the street.
EPC Rating
73 (C)
Street avg 57 (D)
Floor Area
90 m²
Street avg 81 m²
CO₂ Emissions
2.6 t/year
Street avg 3.9 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
10/mo
Rising 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.







