Flat 5, 97 St Mary Street, Cardiff, CF10 1DX
About Flat 5
Flat 5 is a semi-detached house in Cardiff (CF10 1DX). It has a recorded floor area of 104 m² (around 1119 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (January 2021) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in October 2008 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Average to Good and hot-water efficiency went from Very Poor to Average. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity. At 104 m² this is the 13th smallest of 16 units on EPC record in the building, where floor areas span 39–128 m². The building's EPC ratings span E to C across 16 units on file.
At 104 m² it's 27.5% larger than the typical home in the postcode (82 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 4 January 2031
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Wall insulation improved
More low energy lighting installed
Hot water efficiency improved
Window efficiency improved
Wall insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
Flat 5 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
Flat 5 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£280,000
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
Floor Area for Flat 5 runs comfortably ahead of the street norm.
EPC Rating
65 (D)
Street avg 58 (D)
Floor Area
104 m²
Street avg 79 m²
CO₂ Emissions
3.1 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.







