21, Mathias Close, Cardiff occupies a 305 m² plot as recorded by HM Land Registry.

All 22 other houses in this postcode have recorded plot sizes, and this one ranks as the largest.

21, Mathias Close, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 09 May 2022.

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

21, Mathias Close, Cardiff last changed hands on 16th September 2022, selling for £305,000. 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 12.7% since September 2022.

• Sold Sep 2022£305,000
• Sold Jul 2016£218,500

Land Registry records and our Estate Agent network show 72 sales of comparable properties within 510 metres of 21, Mathias Close, Cardiff since 2015.

Most recently, 113, Ffordd Nowell, Cardiff, CF23 9FB, a freehold house, sold at £315,000 on the 27th January 2026.

Read more about house prices in CF23.

• Sold Jan 2026£315,000 | 3 Bed House113, Ffordd Nowell, Cardiff, CF23 9FB113, Ffordd Nowell, Cardiff, CF23 9FB
• Sold Nov 2025£314,000 | 3 Bed House21, Scholars Drive, Cardiff, CF23 9FE21, Scholars Drive, Cardiff, CF23 9FE
• Sold Nov 2025£345,000 | 3 Bed House86, Amesbury Road, Cardiff, CF23 5DY86, Amesbury Road, Cardiff, CF23 5DY
• Sold Sep 2025£280,000 | 3 Bed House8, Deri Close, Cardiff, CF23 5EA8, Deri Close, Cardiff, CF23 5EA
• Sold Jul 2025£283,000 | 3 Bed House8, Baber Close, Cardiff, CF23 9BX8, Baber Close, Cardiff, CF23 9BX
• Sold Jan 2025£305,000 | 3 Bed House4, Howardian Close, Cardiff, CF23 9AG4, Howardian Close, Cardiff, CF23 9AG
• Sold Jul 2024£277,500 | 3 Bed House99, Ffordd Nowell, Cardiff, CF23 9FB99, Ffordd Nowell, Cardiff, CF23 9FB
• Sold Oct 2023£350,000 | 3 Bed House84, Amesbury Road, Cardiff, CF23 5DY84, Amesbury Road, Cardiff, CF23 5DY
• Sold Jun 2023£265,000 | 3 Bed House4, Stallcourt Close, Cardiff, CF23 5EB4, Stallcourt Close, Cardiff, CF23 5EB
• Sold Nov 2022£250,000 | 3 Bed House7, Firstbrook Close, Cardiff, CF23 9ER7, Firstbrook Close, Cardiff, CF23 9ER
• Sold Aug 2022£332,500 | 3 Bed House22, Firstbrook Close, Cardiff, CF23 9ER22, Firstbrook Close, Cardiff, CF23 9ER
• Sold Apr 2022£201,000 | 3 Bed House72, Ffordd Nowell, Cardiff, CF23 9FB72, Ffordd Nowell, Cardiff, CF23 9FB
• Sold Oct 2021£224,000 | 3 Bed House91, Colchester Avenue, Cardiff, CF23 9AY91, Colchester Avenue, Cardiff, CF23 9AY
• Sold Dec 2020£258,500 | 3 Bed House37, Foster Drive, Cardiff, CF23 9BD37, Foster Drive, Cardiff, CF23 9BD
• Sold Nov 2019£242,500 | 3 Bed House22, Mathias Close, Cardiff, CF23 9BE22, Mathias Close, Cardiff, CF23 9BE
• Sold Aug 2019£228,000 | 3 Bed House93, Colchester Avenue, Cardiff, CF23 9AY93, Colchester Avenue, Cardiff, CF23 9AY
• Sold Sep 2017£175,000 | 3 Bed House27, Foster Drive, Cardiff, CF23 9BD27, Foster Drive, Cardiff, CF23 9BD
• Sold Oct 2016£205,000 | 3 Bed House105, Colchester Avenue, Cardiff, CF23 9AY105, Colchester Avenue, Cardiff, CF23 9AY
• Sold Sep 2015£170,000 | 3 Bed House89, Colchester Avenue, Cardiff, CF23 9AY89, Colchester Avenue, Cardiff, CF23 9AY
• Sold Apr 2015£189,000 | 3 Bed House99, Colchester Avenue, Cardiff, CF23 9AY99, Colchester Avenue, Cardiff, CF23 9AY

Our analysis of the public data ranks 21, Mathias Close, Cardiff as the 3rd largest and the most expensive of the 22 addresses on Mathias Close, Penylan, Cardiff, CF23.

Against the CF23 postcode district average, it is £42k less expensive than the typical property.

• Cathays

  |

  2.1 km away
• Cardiff Queen Street

  |

  2.2 km away
• Heath Low Level

  |

  2.7 km away

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