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11 St James Mansions, Mount Stuart Square, Cardiff, CF10 5LG

Property type
End terrace
Floor 02
Bedroom
1
Floor area
44 m²
474 sq ft
Energy rating
D
Score 65
Council tax
Band D
Tenure
Private Rental
Overview

About 11 St James Mansions

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

11 St James Mansions is a one-bedroom end-of-terrace house in Cardiff (CF10 5LG). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1983-1990 and council tax band D. At 44 m² this is the 7th smallest of 24 units on EPC record in the building, where floor areas span 39–92 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (November 2023) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 80). Main heating runs on electricity.

Untraded for 23 years, with the last transfer in July 2003. Across 2002–2003, sale prices on this property compounded at 30.5% per year. Today's modelled estimate of £139,000 is 23.6% above the 2003 sale price. On a £-per-square-foot basis, the last sale (£238/sq ft) was about 26.6% above the typical sold price in the postcode. At 44 m² it's 25.4% smaller than the typical home in the postcode (59 m² median across 23 EPCs).

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
  • Dining roomYes

Outside

  • ParkingAllocated
Before you decide

Everything you need to know about 11 St James Mansions

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

Larger development activity nearbyRecent ownership pattern worth a look

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
Nov 2023

EPC Rating

A
B
C
D
D65
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Very Poor
Windows
Average
CO2 Emissions
1.9 t/year
Occupancy
Rented

Certificate validity

Valid until 28 November 2033

7 years remaining
SDL Surveying

Get a survey for this property

Level 3 Building Survey

Late 20th century2nd Floor FlatEPC DNo 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 11 St James Mansions, Mount Stuart Square, Cardiff, CF10 5LG, sourced from the PlanIt planning register.

11 St James 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.

11 St James Mansions changed hands twice within eighteen months — unusual for the area.

Current estimate

£139,000

Modelled from EPC, postcode comparables and a sale-price growth of 30.5% per year over 1 year.

See how we calculated this
Last sold (2003)

£112,500

Growth on file: 30.5% per year over 1 year.

Sales timeline

  1. 17 July 2003Most recent

    £112,500

    +32.4%over 1 year

  2. 27 June 2002

    £85,000

Median price across the last 5 sales in CF10 5LG: £155,000 (2020–2015).

On the street

Versus other Mount Stuart Square homes

Four headline reads against 23 similar flats on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 11 St James Mansions runs comfortably ahead of the street norm.

Price per m²

£2,557

Street avg £2,120

Strongly above

Floor Area

44 m²

Street avg 59 m²

Below

Habitable Rooms

2 rooms

Street avg 3 rooms

Below

CO₂ Emissions

1.9 t/year

Street avg 2.2 t/year

On par
Before you decide

Everything you need to know about 11 St James Mansions

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

Larger development activity nearbyRecent ownership pattern worth a look

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

0.2 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 11 St James Mansions, Mount Stuart Square, Cardiff, CF10 5LG. Each answer is also embedded as structured data for search engines.