Our Data Sources
15, Mostyn Square, Cardiff has 3 entries in the Land Registry, most recently in August 2022 and a single entry in the EPC database dated October 2021.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high 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 15, Mostyn Square, Cardiff, we estimate a market value of £391,167 and a rental value of £1,894 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £346,462 and £1,678 per month respectively.
Plot Size
HM Land Registry records the plot of land for 15, Mostyn Square, Cardiff as measuring 166 m2.
That makes it the 12th largest plot in the postcode, where 30 of the 40 other houses have recorded plot data.
Energy Efficiency
15, Mostyn Square, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 04 Oct 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 15, Mostyn Square, Cardiff completed on 25th August 2022 at £360,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold 3 times.
Values of comparable properties have risen by 19.6% over the period since August 2022.
- Sold Aug 2022£360,000
- Sold Sep 2012£216,000
- Sold Jun 2008£223,495
Similar Properties Sold Nearby
Since 2017 170 properties similar to 15, Mostyn Square, Cardiff have sold within a radius of 620 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 26th March 2026, was 13, Watkins Square, Cardiff, CF14 4NH, a freehold house which sold for £375,000.
Read more about house prices in CF14.
- Sold Mar 2026£375,000 | 4 Bed House13, Watkins Square, Cardiff, CF14 4NH13, Watkins Square, Cardiff, CF14 4NH
- Sold Dec 2025£390,000 | 4 Bed House35, Mostyn Square, Cardiff, CF14 5FE35, Mostyn Square, Cardiff, CF14 5FE
- Sold Nov 2025£338,000 | 4 Bed House3, Mostyn Square, Cardiff, CF14 5FE3, Mostyn Square, Cardiff, CF14 5FE
- Sold Nov 2025£335,000 | 4 Bed House205, Tatham Road, Cardiff, CF14 5FF205, Tatham Road, Cardiff, CF14 5FF
- Sold Nov 2025£365,000 | 3 Bed House41, Mostyn Square, Cardiff, CF14 5FE41, Mostyn Square, Cardiff, CF14 5FE
Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Explore Nearby Properties
The surrounding properties have an average estimated value of £403,044, ranging from £147,369 to £634,469.
- 11 Mostyn Square
3 Bed House | 5 m | Est. Value: £341,366
- 9 Mostyn Square
3 Bed House | 11 m | Est. Value: £342,854
- 17 Mostyn Square
5 Bed House | 14 m | Est. Value: £634,469
- 7 Mostyn Square
4 Bed House | 18 m | Est. Value: £354,776
- 19 Mostyn Square
3 Bed House | 22 m | Est. Value: £347,771
Location Comparison
Of the 41 addresses on Mostyn Square, Llanishen, Cardiff, CF14, 15, Mostyn Square, Cardiff comes out as the 17th largest and the 18th most expensive in our analysis of the public data.
It is also £574 more expensive than the average property across the CF14 district.
More reading links
Schools Nearby
Public Transport Nearby
- Ty Glas|300 m away
- Birchgrove|400 m away
- Rhiwbina|1.1 km away
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
