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

3 sales on record
Property type
Mid terrace
Floor 2nd
Bedroom
1
Bathroom
1
Floor area
44 m²
474 sq ft
Energy rating
C
Score 80
Council tax
Band D
Tenure
Private Rental
Overview

About 18 St James Mansions

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

18 St James Mansions is a one-bedroom mid-terrace house in Cardiff (CF10 5LG). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1900-1929 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 across 24 units on file. The latest certificate (February 2019) shows a C (score 80), near the top of the C band. The recommended improvements would push it to B (score 84). Main heating runs on electricity.

It hasn't traded since August 2004, a hold of 22 years that's notably long for the area. Across 2002–2004, sale prices on this property compounded at 20.2% per year. On a £-per-square-foot basis, the last sale (£271/sq ft) was about 45.5% 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
  • Bathrooms1
  • Dining roomYes

Outside

  • ParkingAllocated

Building

  • Central heatingYes
Before you decide

Everything you need to know about 18 St James 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.

For a compact home of this size, this rating sits in the top tier locally.

Current Certificate
Feb 2019

EPC Rating

A
B
C
C80
D
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Average
Windows
Average
CO2 Emissions
1.7 t/year
Occupancy
Rented

Certificate validity

Valid until 27 February 2029

2 years remaining
SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-era2nd Floor FlatEPC CPre-1919 buildNo mains gas

Because the property was built before 1919 and 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 18 St James Mansions, Mount Stuart Square, Cardiff, CF10 5LG, sourced from the PlanIt planning register.

18 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.

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

Current estimate

£135,000

Modelled from EPC, postcode comparables and a sale-price growth of 20.2% per year over 2 years.

See how we calculated this
Last sold (2004)

£128,500

Growth on file: 20.2% per year over 2 years.

Sales timeline

  1. 26 August 2004Most recent

    £128,500

    +7.1%over 11 months

  2. 9 October 2003

    £120,000

    +41.2%over 1 year

  3. 29 May 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.

18 St James Mansions outperforms the street on price per m² by a wide margin.

Price per m²

£2,920

Street avg £2,104

Strongly above

Floor Area

44 m²

Street avg 59 m²

Below

Habitable Rooms

2 rooms

Street avg 3 rooms

Below

CO₂ Emissions

1.7 t/year

Street avg 2.2 t/year

Strongly above
Before you decide

Everything you need to know about 18 St James 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
£122k

1 Heol Staughton

CF10 5FS

1 bed1 bath
£150k

1 Clarence Mews, Clarence Embankment

CF10 5GF

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