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

Solar panels5 sales on record
Property type
Mid terrace
Floor 01
Bedrooms
2
Bathrooms
2
Floor area
80 m²
861 sq ft
Energy rating
C
Score 79
Council tax
Band E
Tenure
Owner Occupied
Overview

About 12 St Stephens Mansions

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

12 St Stephens Mansions is a two-bedroom mid-terrace house in Cardiff (CF10 5LQ). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 2003-2006 and council tax band E. The property has solar panels on record, all of which lower running costs and tend to lift resale appeal. At 80 m² this is the 45th 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. The latest certificate (March 2021) shows a C (score 79), near the top of the C band. The rating has held steady at C across 2 certificates since September 2009. Between certificates, lighting went from Good to Very Good; while main heating dropped from Poor to Very Poor. The recommended improvements would push it to B (score 85). Main heating runs on electricity.

Most recent transfer: July 2024 at £199,900. Across the public record there are 5 sales, relatively high churn for a single property. Across 2003–2024, sale prices on this property compounded at 0.6% per year.

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

  • Bedrooms2
  • Bathrooms2
  • EnsuiteYes

Outside

  • ParkingUnderground

Building

  • Solar panelsYes
  • RefurbishedYes
Before you decide

Everything you need to know about 12 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)
Mar 2021

EPC Rating

A
B
C
C79
D
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Poor
Windows
Good
CO2 Emissions
1.9 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 16 March 2031

4 years remaining

Property Improvements

Changes detected from historical EPC data

Mar 2021from Sept 2009
Heating System
Storage HeatersRoom Heaters

Heating system changed

Heating Controls
ManualThermostat

Heating controls upgraded for better temperature management

Low Energy Lighting
50%85%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 3 Building Survey

21st century1st Floor FlatEPC CNo mains gas

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

From £885 · Includes VAT

Planning

Planning history

Applications and permits filed against 12 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ, sourced from the PlanIt planning register.

12 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.

12 St Stephens Mansions has changed hands more often than typical for the area.

Current estimate

£202,000

Modelled from EPC, postcode comparables and a sale-price growth of 0.6% per year over 21 years.

See how we calculated this
Last sold (2024)

£199,900

Growth on file: 0.6% per year over 21 years.

Sales timeline

  1. 9 July 2024Most recent

    £199,900

    +2.0%over 3 years

  2. 11 April 2021

    £196,000

    +11.0%over 2 years

  3. 14 March 2019

    £176,500

    +4.5%over 14 years

  4. 28 June 2004

    £168,950

    -3.5%over 11 months

  5. 30 July 2003

    £175,000

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 years held, 12 St Stephens Mansions runs well behind the street norm.

Price per m²

£2,499

Street avg £2,303

Above

Floor Area

80 m²

Street avg 72 m²

Above

Habitable Rooms

3 rooms

Street avg 3 rooms

On par

CO₂ Emissions

1.9 t/year

Street avg 2.2 t/year

Above
Before you decide

Everything you need to know about 12 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.
£227k

1 Ezel Court, Heol Glan Rheidol

CF10 5NS

2 bed2 bath
£254k

1 Empire House, Mount Stuart Square

CF10 5LR

2 bed2 bath
£160k

1 Carlotta Way

CF10 5FY

2 bed
£201k

1 Judkin Court, Heol Tredwen

CF10 5AU

3 bed2 bath
£372k

1 Bute Esplanade

CF10 5BD

2 bed2 bath
£190k

1 Adelaide Street

CF10 5BS

3 bed
£184k

1 Clarence Court, Pomeroy Street

CF10 5GT

1 bed1 bath
£150k

1 Clarence Mews, Clarence Embankment

CF10 5GF

1 bed1 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 12 St Stephens Mansions, Mount Stuart Square, Cardiff, CF10 5LQ. Each answer is also embedded as structured data for search engines.