HM Land Registry records the plot of land for 11, Mostyn Square, Cardiff as measuring 132 m².

That makes it the 18th largest plot in the postcode, where 30 of the 40 other houses have recorded plot data.

11, Mostyn Square, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Jul 2020.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 11, Mostyn Square, Cardiff completed on 14th March 2014 at £224,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 72.3% over the period since March 2014.

• Sold Mar 2014£224,000
• Sold Sep 2008£189,000

Since 2013 210 properties similar to 11, 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 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
• Sold May 2025£320,000 | 3 Bed House86, Watkins Square, Cardiff, CF14 5FL86, Watkins Square, Cardiff, CF14 5FL
• Sold Mar 2025£350,000 | 3 Bed House128, Watkins Square, Cardiff, CF14 5FL128, Watkins Square, Cardiff, CF14 5FL
• Sold Feb 2025£345,000 | 3 Bed House126, Watkins Square, Cardiff, CF14 5FL126, Watkins Square, Cardiff, CF14 5FL
• Sold May 2024£345,000 | 3 Bed House40, Watkins Square, Cardiff, CF14 5FL40, Watkins Square, Cardiff, CF14 5FL
• Sold Nov 2023£347,000 | 3 Bed House5, Mostyn Square, Cardiff, CF14 5FE5, Mostyn Square, Cardiff, CF14 5FE
• Sold Mar 2023£322,500 | 3 Bed House40, Tasker Square, Cardiff, CF14 5ET40, Tasker Square, Cardiff, CF14 5ET
• Sold Dec 2021£319,000 | 3 Bed House1, Watkins Square, Cardiff, CF14 4NH1, Watkins Square, Cardiff, CF14 4NH
• Sold Sep 2021£275,000 | 3 Bed House38, Tasker Square, Cardiff, CF14 5ET38, Tasker Square, Cardiff, CF14 5ET
• Sold May 2021£265,000 | 3 Bed House6, Mostyn Square, Cardiff, CF14 5FE6, Mostyn Square, Cardiff, CF14 5FE
• Sold Apr 2021£265,000 | 3 Bed House4, Mostyn Square, Cardiff, CF14 5FE4, Mostyn Square, Cardiff, CF14 5FE
• Sold Aug 2020£283,500 | 3 Bed House4, Watkins Square, Cardiff, CF14 5EQ4, Watkins Square, Cardiff, CF14 5EQ
• Sold Jul 2020£313,000 | 4 Bed House207, Tatham Road, Cardiff, CF14 5FF207, Tatham Road, Cardiff, CF14 5FF
• Sold Dec 2018£245,000 | 3 Bed House14, Mostyn Square, Cardiff, CF14 5FE14, Mostyn Square, Cardiff, CF14 5FE
• Sold Jul 2017£226,500 | 3 Bed House12, Mostyn Square, Cardiff, CF14 5FE12, Mostyn Square, Cardiff, CF14 5FE
• Sold Nov 2015£237,000 | 4 Bed House7, Mostyn Square, Cardiff, CF14 5FE7, Mostyn Square, Cardiff, CF14 5FE
• Sold May 2013£217,000 | 3 Bed House19, Mostyn Square, Cardiff, CF14 5FE19, Mostyn Square, Cardiff, CF14 5FE

Of the 41 addresses on Mostyn Square, Llanishen, Cardiff, CF14, 11, Mostyn Square, Cardiff comes out as the 31st largest and the 31st most expensive in our analysis of the public data.

It is also £31k less expensive than the average property across the CF14 district.

• Ty Glas

  |

  300 m away
• Birchgrove

  |

  400 m away
• Rhiwbina

  |

  1.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.