21, St. Marys Avenue, Barry occupies a 133 m² plot as recorded by HM Land Registry.

Of the 20 other houses in this postcode, 17 have recorded plot sizes, and this one ranks as the largest.

21, St. Marys Avenue, Barry has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 11 Dec 2014.

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

21, St. Marys Avenue, Barry last changed hands on 4th April 2018, selling for £135,000. 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 52.5% since April 2018.

Land Registry records and our Estate Agent network show 118 sales of comparable properties within 370 metres of 21, St. Marys Avenue, Barry since 2021.

Most recently, 31, Pyke Street, Barry, CF63 4PF, a freehold house, sold at £213,000 on the 30th April 2026.

Read more about house prices in CF63.

• Sold Apr 2026£213,000 | 4 Bed House31, Pyke Street, Barry, CF63 4PF31, Pyke Street, Barry, CF63 4PF
• Sold Apr 2026£230,000 | 4 Bed House46, Morel Street, Barry, CF63 4PL46, Morel Street, Barry, CF63 4PL
• Sold Feb 2026£274,000 | 4 Bed House56, Dock View Road, Barry, CF63 4LQ56, Dock View Road, Barry, CF63 4LQ
• Sold Dec 2025£282,500 | 4 Bed House12, Court Road, Barry, CF63 4ET12, Court Road, Barry, CF63 4ET
• Sold Nov 2025£253,000 | 4 Bed House70, Station Street, Barry, CF63 4LY70, Station Street, Barry, CF63 4LY
• Sold Sep 2025£210,000 | 4 Bed House18, Station Street, Barry, CF63 4LY18, Station Street, Barry, CF63 4LY
• Sold Jul 2025£200,000 | 4 Bed House67, Maes-Y-Cwm Street, Barry, CF63 4EJ67, Maes-Y-Cwm Street, Barry, CF63 4EJ
• Sold May 2025£180,000 | 4 Bed House2, Court Road, Barry, CF63 4ET2, Court Road, Barry, CF63 4ET
• Sold Mar 2025£250,000 | 4 Bed House94, Dock View Road, Barry, CF63 3QQ94, Dock View Road, Barry, CF63 3QQ
• Sold Mar 2025£193,000 | 4 Bed House108, Kingsland Crescent, Barry, CF63 4JS108, Kingsland Crescent, Barry, CF63 4JS
• Sold Mar 2025£185,000 | 4 Bed House84, Station Street, Barry, CF63 4LX84, Station Street, Barry, CF63 4LX
• Sold Nov 2024£240,000 | 4 Bed House64, George Street, Barry, CF63 4NN64, George Street, Barry, CF63 4NN
• Sold Sep 2024£175,000 | 4 Bed House79, Kingsland Crescent, Barry, CF63 4JS79, Kingsland Crescent, Barry, CF63 4JS
• Sold Jul 2024£290,000 | 4 Bed House80, Kingsland Crescent, Barry, CF63 4JS80, Kingsland Crescent, Barry, CF63 4JS
• Sold Apr 2024£240,000 | 4 Bed House63, Castleland Street, Barry, CF63 4LL63, Castleland Street, Barry, CF63 4LL
• Sold Jun 2023£180,000 | 4 Bed House62, Station Street, Barry, CF63 4LY62, Station Street, Barry, CF63 4LY
• Sold Aug 2022£253,000 | 4 Bed House90, Station Street, Barry, CF63 4LX90, Station Street, Barry, CF63 4LX
• Sold May 2022£224,000 | 4 Bed House73, Jewel Street, Barry, CF63 3NR73, Jewel Street, Barry, CF63 3NR
• Sold Feb 2022£275,000 | 4 Bed House38, Cross Street, Barry, CF63 4LU38, Cross Street, Barry, CF63 4LU
• Sold Jun 2021£182,000 | 4 Bed House1, Evelyn Street, Barry, CF63 4EN1, Evelyn Street, Barry, CF63 4EN

Our analysis of the public data ranks 21, St. Marys Avenue, Barry as the 3rd largest and the 3rd most expensive of the 100 addresses on St. Marys Avenue, Barry, CF63.

Against the CF63 postcode district average, it is £36k more expensive than the typical property.

• Barry Docks

  |

  400 m away
• Cadoxton

  |

  1.2 km away
• Barry Island

  |

  1.6 km away

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