Skip to content
UK Property Looker

1 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ

Property type
End terrace
Floor 00
Bedroom
1
Bathroom
1
Floor area
55 m²
592 sq ft
Energy rating
C
Score 70
Council tax
Band D
Tenure
Private Rental
Overview

About 1 St Stephens Mansions

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

1 St Stephens Mansions is a one-bedroom end-of-terrace house in Cardiff (CF10 5LQ). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (November 2020) shows a C (score 70). When first surveyed in June 2009 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Average to Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Average to Poor. Main heating runs on electricity. At 55 m² this is the 3rd smallest of 7 units on EPC record in 1 St Stephens Mansions, where floor areas span 53–94 m². The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (70 versus a best of 83).

Held since June 2004 — that's 22 years off the open market, well above the local norm. At 55 m² it's 24.7% smaller than the typical home in the postcode (73 m² median across 63 EPCs). Today's modelled estimate of £136,000 is 16.2% above the 2004 sale price.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms1
  • Bathrooms1

Outside

  • Private gardenYes
  • ParkingYes
Before you decide

Everything you need to know about 1 St Stephens Mansions

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Nov 2020

EPC Rating

A
B
C
C70
D
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Poor
Windows
Good
CO2 Emissions
2.3 t/year
Occupancy
Rented

Certificate validity

Valid until 4 November 2030

4 years remaining

Property Improvements

Changes detected from historical EPC data

Nov 2020from Jun 2009
EPC improved fromE52toC70
Hot Water
ImmersionImmersion (Off-Peak)

Hot water system upgraded

Windows
AverageGood

Window efficiency improved

Floor Insulation
PartialInsulated

Floor insulation added or improved

Low Energy Lighting
16%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 3 Building Survey

21st centuryGround Floor FlatEPC CNo mains gas

Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.

From £820 · Includes VAT

Planning

Planning history

Applications and permits filed against 1 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ, sourced from the PlanIt planning register.

1 St Stephens Mansions has no planning applications on record.

5

But the area is active

5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
Current estimate

£136,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2004)

£117,000

Recorded with HM Land Registry.

Sales timeline

  1. 17 June 2004Most recent

    £117,000

Median price across the last 5 sales in CF10 5LQ: £195,000 (2026–2025).

On the street

Versus other Mount Stuart Square homes

Four headline reads against 62 similar flats on this street, drawn from the latest EPC and Land Registry data.

On habitable rooms, 1 St Stephens Mansions runs well behind the street norm.

Price per m²

£2,127

Street avg £2,308

Below

Floor Area

55 m²

Street avg 72 m²

Strongly below

Habitable Rooms

2 rooms

Street avg 3 rooms

Strongly below

CO₂ Emissions

2.3 t/year

Street avg 2.2 t/year

Below
Before you decide

Everything you need to know about 1 St Stephens Mansions

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£132k

1 Hansen Court, Heol Glan Rheidol

CF10 5NX

1 bed1 bath
£150k

1 Clarence Mews, Clarence Embankment

CF10 5GF

1 bed1 bath
£122k

1 Heol Staughton

CF10 5FS

1 bed1 bath
£184k

1 Clarence Court, Pomeroy Street

CF10 5GT

1 bed1 bath
£160k

1 Carlotta Way

CF10 5FY

2 bed
£400k

1 Harbour Point, Stuart Street

CF10 5BW

1 bed
£227k

1 Ezel Court, Heol Glan Rheidol

CF10 5NS

2 bed2 bath
£254k

1 Empire House, Mount Stuart Square

CF10 5LR

2 bed2 bath
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Cardiff district page.
Full Cardiff report

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.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 1 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ. Each answer is also embedded as structured data for search engines.