10 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
About 10 St Stephens Mansions
10 St Stephens Mansions is a one-bedroom mid-terrace house in Cardiff (CF10 5LQ). It has a recorded floor area of 56 m² (around 607 sq ft), construction records dating it to 2003-2006 and council tax band D. At 56 m² this is the 11th smallest of 64 units on EPC record in the building, where floor areas span 48–99 m². The building's EPC ratings span E to B across 64 units on file. Other recorded features include a balcony. The latest certificate (July 2010) shows a C (score 75), near the top of the C band. The recommended improvements would push it to B (score 83). Main heating runs on electricity. The latest certificate is from July 2010, so improvements made since then won't be reflected.
Untraded for 22 years, with the last transfer in June 2004. At 56 m² it's 22.7% smaller than the typical home in the postcode (73 m² median across 63 EPCs). Across 2004–2004, sale prices on this property compounded at -15.4% per year. Today's modelled estimate of £134,000 is 16.5% above the 2004 sale price.
What this property has
Inside
- Bedrooms1
- FireplaceYes
Outside
- ParkingAllocated
- BalconyYes
Energy performance
10 St Stephens Mansions's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 05 Jul 2020
EPC Rating
Certificate validity
Expired on 5 July 2020
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 £820 · Includes VAT
Planning history
10 St Stephens Mansions has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£134,000
Modelled from EPC, postcode comparables and a sale-price growth of -15.4% per year over 1 year.
£115,000
Growth on file: -15.4% per year over 1 year.
Sales timeline
10 June 2004Most recent
£115,000
-15.4%10 June 2004
£136,000
Median price across the last 5 sales in CF10 5LQ: £195,000 (2026–2025).
Nearby sales in CF10 5LQ
32 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
Sold May 2026
£200,00036 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
Sold Apr 2026
£162,00053 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
Sold Jul 2025
£184,00046 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
Sold Jul 2025
£195,00020 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ
Sold Jan 2025
£200,000
Versus other Mount Stuart Square homes
Habitable Rooms for 10 St Stephens Mansions lags the street by a wide margin.
Price per m²
£2,411
Street avg £2,304
Floor Area
56 m²
Street avg 72 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.8 t/year
Street avg 2.2 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
485/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Dumballs Road Bottom — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







