18 St. James Mansions, Cardiff
18 St. James Mansions, Cardiff
Description & Estimates
18 St. James Mansions, Cardiff is described in the public record as a modern apartment with 473 ft2 of internal area.
Locally, apartments of this size normally have 1 bedroom with a balcony.
Our estimate of the sale value of 18 St. James Mansions, Cardiff is £117,205 and its rental estimate is £855 per month, given the available information and assuming reasonable condition.
St. James Mansions, Mount Stuart Square is a residential building on Mount Stuart Square, Cardiff, CF10 and falls within the CF10 postal district.
Our Data Sources
18 St. James Mansions, Cardiff has no recent1 records in the the Land Registry and a single entry in the EPC database dated February 2019.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 18 St. James Mansions, Cardiff, we estimate a market value of £123,066 and a rental value of £898 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £109,001 and £795 per month respectively.
Recent Market Change
Over the last year, 18 St. James Mansions, Cardiff has seen its estimated sale value drop by £784 (0.7%) and its estimated rental value rise by £33 per month (3.8%). This results in an estimated gross rental yield of 8.8%.
Energy Efficiency
18 St. James Mansions, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Feb 2019.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Electric storage heaters.
Sold Prices
The most recent sale of 18 St. James Mansions, Cardiff completed on 27th August 2004 at £128,500 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 the property has sold 3 times.
- Sold Aug 2004£128,500
- Sold Oct 2003£120,000
- Sold May 2002£85,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 18 St. James Mansions, Cardiff have sold within a radius of 340 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 2nd September 2025, was 25, Carlotta Way, Cardiff, CF10 5FY, a leasehold flat which sold for £122,000.
Read more about house prices in CF10.
- Sold Sep 2025£122,000 | 1 Bed FlatCarlotta Way25, Carlotta Way, Cardiff, CF10 5FY
- Sold Sep 2025£113,500 | 1 Bed FlatCarlotta Way21, Carlotta Way, Cardiff, CF10 5FY
- Sold Mar 2024£2,940,000 | 1 Bed FlatSt. Line House 60, Mount Stuart SquareFlat 11, St. Line House 60, Mount Stuart Square, Cardiff, CF10 5LY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 221 addresses on Mount Stuart Square, Cardiff, CF10, 18 St. James Mansions, Cardiff comes out as the 194th largest and the 213th most expensive in our analysis of the public data.
It is also £72k less expensive than the average property across the CF10 district.
More reading links
Schools Nearby
Public Transport Nearby
From 18 St. James Mansions, Cardiff, the nearest station is Cardiff Bay, 200 metres away.
- 200mCardiff Bay
- 1.4kmCardiff Central
- 1.4kmGrangetown (Cardiff)
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.
