27, Mostyn Square, Cardiff occupies a 304 m² plot as recorded by HM Land Registry.

Of the 40 other houses in this postcode, 30 have recorded plot sizes, and this one ranks as the 2nd largest.

27, Mostyn Square, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 05 Jul 2022.

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

27, Mostyn Square, Cardiff last changed hands on 29th April 2010, selling for £288,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 105.5% since April 2010.

• Sold Apr 2010£288,000
• Sold Mar 2009£250,000

Land Registry records and our Estate Agent network show 42 sales of comparable properties within 610 metres of 27, Mostyn Square, Cardiff since 2008.

Most recently, 74, Beulah Road, Cardiff, CF14 6LY, a freehold house, sold at £615,000 on the 22nd December 2025.

Read more about house prices in CF14.

• Sold Dec 2025£615,000 | 4 Bed House74, Beulah Road, Cardiff, CF14 6LY74, Beulah Road, Cardiff, CF14 6LY
• Sold Dec 2025£575,000 | 4 Bed House23, Heol Mynydd Bychan, Cardiff, CF14 4NL23, Heol Mynydd Bychan, Cardiff, CF14 4NL
• Sold Mar 2025£525,000 | 4 Bed House21, Heol Mynydd Bychan, Cardiff, CF14 4NL21, Heol Mynydd Bychan, Cardiff, CF14 4NL
• Sold May 2024£475,000 | 4 Bed House112, Ty Glas Road, Cardiff, CF14 5EG112, Ty Glas Road, Cardiff, CF14 5EG
• Sold Oct 2023£535,000 | 4 Bed House25, Heol Mynydd Bychan, Cardiff, CF14 4NL25, Heol Mynydd Bychan, Cardiff, CF14 4NL
• Sold Jan 2023£577,500 | 4 Bed House85, Beulah Road, Cardiff, CF14 6LW85, Beulah Road, Cardiff, CF14 6LW
• Sold Nov 2022£575,000 | 4 Bed House21, Thornhill Road, Cardiff, CF14 6PD21, Thornhill Road, Cardiff, CF14 6PD
• Sold Nov 2021£495,000 | 4 Bed House23, Heol Iscoed, Cardiff, CF14 6PA23, Heol Iscoed, Cardiff, CF14 6PA
• Sold Apr 2021£395,200 | 4 Bed House76, Ashbourn Way, Cardiff, CF14 5EY76, Ashbourn Way, Cardiff, CF14 5EY
• Sold Oct 2020£435,000 | 4 Bed House53, Thornhill Road, Cardiff, CF14 6PE53, Thornhill Road, Cardiff, CF14 6PE
• Sold Apr 2020£275,000 | 4 Bed House15, Thornhill Road, Cardiff, CF14 6PD15, Thornhill Road, Cardiff, CF14 6PD
• Sold Dec 2017£347,500 | 4 Bed House13, Heol Iscoed, Cardiff, CF14 6PA13, Heol Iscoed, Cardiff, CF14 6PA
• Sold Jun 2016£385,000 | 4 Bed House132, Ty Glas Road, Cardiff, CF14 5EG132, Ty Glas Road, Cardiff, CF14 5EG
• Sold Aug 2015£340,000 | 4 Bed House18, Mostyn Square, Cardiff, CF14 5FE18, Mostyn Square, Cardiff, CF14 5FE
• Sold Aug 2014£350,000 | 4 Bed House104, Ty Glas Road, Cardiff, CF14 5EG104, Ty Glas Road, Cardiff, CF14 5EG
• Sold Jun 2014£322,500 | 4 Bed House17, St. Asaph Close, Cardiff, CF14 4LD17, St. Asaph Close, Cardiff, CF14 4LD
• Sold May 2009£240,000 | 3 Bed House45, Mostyn Square, Cardiff, CF14 5FE45, Mostyn Square, Cardiff, CF14 5FE
• Sold Jan 2009£232,000 | 4 Bed House2, Mostyn Square, Cardiff, CF14 5FE2, Mostyn Square, Cardiff, CF14 5FE
• Sold Dec 2008£272,995 | 4 Bed House23, Mostyn Square, Cardiff, CF14 5FE23, Mostyn Square, Cardiff, CF14 5FE
• Sold Aug 2008£224,995 | 4 Bed House1, Mostyn Square, Cardiff, CF14 5FE1, Mostyn Square, Cardiff, CF14 5FE

Our analysis of the public data ranks 27, Mostyn Square, Cardiff as the 8th largest and the 4th most expensive of the 41 addresses on Mostyn Square, Llanishen, Cardiff, CF14.

Against the CF14 postcode district average, it is £192k more expensive than the typical property.

• Ty Glas

  |

  300 m away
• Birchgrove

  |

  400 m away
• Rhiwbina

  |

  1.1 km away

Environment Agency data suggests this area has a Very Low risk of flooding.