Flat 12, 97 St Mary Street, Cardiff, CF10 1DX
About Flat 12
Flat 12 is an end-of-terrace house in Cardiff (CF10 1DX). It has a recorded floor area of 101 m² (around 1087 sq ft) and construction records dating it to 1930-1949. The latest certificate (February 2019) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 2 certificates since January 2009. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 78). Main heating runs on electricity. At 101 m² this is the 9th 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 101 m² it's 23% larger than the typical home in the postcode (82 m² median across 25 EPCs).
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
More low energy lighting installed
Ventilation system changed
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 12 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 12 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£225,000
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
Habitable Rooms for Flat 12 runs comfortably ahead of the street norm.
EPC Rating
58 (D)
Street avg 58 (D)
Floor Area
101 m²
Street avg 80 m²
CO₂ Emissions
4.5 t/year
Street avg 3.7 t/year
Habitable Rooms
6 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.







