11 St. James Mansions, Cardiff
11 St. James Mansions, Cardiff
Description & Estimates







According to the public record, 11 St. James Mansions, Cardiff is a modern apartment with 473 ft2 of internal area.
Apartments of this size in this area normally have 1 bedroom with a balcony.
Based on available information, and assuming reasonable condition, the estimated sale value for 11 St. James Mansions, Cardiff is £117,205 and the estimated rental value is £855 per month.
The apartment is within St. James Mansions, Mount Stuart Square, Cardiff, CF10.
Mount Stuart Square, Cardiff, CF10 is located within the CF10 postal district.
Our Data Sources
11 St. James Mansions, Cardiff has no recent1 records in the the Land Registry and a single entry in the EPC database dated November 2023.
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
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 11 St. James Mansions, Cardiff is in very good condition we estimate a sale value of £123,066 and a rental value of £898 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £109,001 and a rental value of £795 per month.
Recent Market Change
Over the past 12 months, the estimated sale value of 11 St. James Mansions, Cardiff has fallen by £784 (0.7%), while its estimated rental value has moved up by £33 per month (3.8%). Based on current estimates, the property offers a gross rental yield of 8.8%.
Energy Efficiency
11 St. James Mansions, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Nov 2023.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Room heaters, electric.
Sold Prices
According to HM Land Registry, 11 St. James Mansions, Cardiff was last sold on 18th July 2003 for £112,500 and was recorded as a leasehold flat.
The property has had 2 sales since 1995.
- Sold Jul 2003£112,500
- Sold Jun 2002£85,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 11 St. James Mansions, Cardiff within a radius of 340 metres over the last 2 years.
The most recent example is 25, Carlotta Way, Cardiff, CF10 5FY, a leasehold flat which sold for £122,000 on the 2nd September 2025.
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.
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Location Comparison
Mount Stuart Square, Cardiff, CF10 has a total of 221 addresses. According to our analysis of all the public data, 11 St. James Mansions, Cardiff is the 195th largest and the 214th most expensive property on the street.
When compared to the postcode district it is £72k less expensive than the average property in CF10.
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Schools Nearby
Public Transport Nearby
The closest station to 11 St. James Mansions, Cardiff is Cardiff Bay station, which is 200 metres away.
- 200mCardiff Bay
- 1.4kmCardiff Central
- 1.4kmGrangetown (Cardiff)
Available Internet Speeds
According to recent data from Ofcom, superfast broadband is available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.

