21, Bryntirion, Mountain Ash occupies a 205 m² plot as recorded by HM Land Registry.

All 47 other houses in this postcode have recorded plot sizes, and this one ranks as the 42nd largest.

21, Bryntirion, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 23 May 2020.

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

21, Bryntirion, Mountain Ash last changed hands on 18th May 2006, selling for £45,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

• Sold May 2006£45,000

Land Registry records and our Estate Agent network show 103 sales of comparable properties within 1.6 kilometres of 21, Bryntirion, Mountain Ash since 2012.

Most recently, 96, Bryntirion, Mountain Ash, CF45 4EX, a freehold house, sold at £82,950 on the 10th December 2025.

Read more about house prices in CF45.

• Sold Dec 2025£82,950 | 3 Bed House96, Bryntirion, Mountain Ash, CF45 4EX96, Bryntirion, Mountain Ash, CF45 4EX
• Sold Nov 2025£88,000 | 3 Bed House134, Bryntirion, Mountain Ash, CF45 4EX134, Bryntirion, Mountain Ash, CF45 4EX
• Sold Sep 2025£75,000 | 3 Bed House7, Walsh Street, Mountain Ash, CF45 4YS7, Walsh Street, Mountain Ash, CF45 4YS
• Sold Aug 2025£83,000 | 3 Bed House90, Bryntirion, Mountain Ash, CF45 4EX90, Bryntirion, Mountain Ash, CF45 4EX
• Sold Jun 2025£59,000 | 3 Bed House2, Walsh Street, Mountain Ash, CF45 4YS2, Walsh Street, Mountain Ash, CF45 4YS
• Sold May 2025£86,000 | 3 Bed House179, Bryntirion, Mountain Ash, CF45 4PJ179, Bryntirion, Mountain Ash, CF45 4PJ
• Sold Apr 2024£80,000 | 3 Bed House199, Bryntirion, Mountain Ash, CF45 4PJ199, Bryntirion, Mountain Ash, CF45 4PJ
• Sold Nov 2023£80,000 | 3 Bed House102, Bryntirion, Mountain Ash, CF45 4EX102, Bryntirion, Mountain Ash, CF45 4EX
• Sold Oct 2022£114,995 | 3 Bed House133, Bryntirion, Mountain Ash, CF45 4EX133, Bryntirion, Mountain Ash, CF45 4EX
• Sold Jul 2022£105,000 | 3 Bed House13, Walsh Street, Mountain Ash, CF45 4YS13, Walsh Street, Mountain Ash, CF45 4YS
• Sold Mar 2022£70,000 | 3 Bed House222, Bryntirion, Mountain Ash, CF45 4EJ222, Bryntirion, Mountain Ash, CF45 4EJ
• Sold Mar 2020£40,000 | 3 Bed House105, Bryntirion, Mountain Ash, CF45 4EX105, Bryntirion, Mountain Ash, CF45 4EX
• Sold Aug 2019£72,000 | 3 Bed House131, Bryntirion, Mountain Ash, CF45 4EX131, Bryntirion, Mountain Ash, CF45 4EX
• Sold Aug 2019£39,995 | 3 Bed House154, Bryntirion, Mountain Ash, CF45 4PJ154, Bryntirion, Mountain Ash, CF45 4PJ
• Sold May 2018£49,000 | 3 Bed House54, Bryntirion, Mountain Ash, CF45 4EJ54, Bryntirion, Mountain Ash, CF45 4EJ
• Sold Jan 2018£48,300 | 3 Bed House23, Bryntirion, Mountain Ash, CF45 4DX23, Bryntirion, Mountain Ash, CF45 4DX
• Sold Aug 2017£60,000 | 3 Bed House206, Bryntirion, Mountain Ash, CF45 4EJ206, Bryntirion, Mountain Ash, CF45 4EJ
• Sold Sep 2014£50,000 | 3 Bed House80, Bryntirion, Mountain Ash, CF45 4EX80, Bryntirion, Mountain Ash, CF45 4EX
• Sold Apr 2014£43,100 | 3 Bed House132, Bryntirion, Mountain Ash, CF45 4EX132, Bryntirion, Mountain Ash, CF45 4EX
• Sold May 2012£50,000 | 3 Bed House24, Bryntirion, Mountain Ash, CF45 4DX24, Bryntirion, Mountain Ash, CF45 4DX

Our analysis of the public data ranks 21, Bryntirion, Mountain Ash as the 118th largest and the 207th most expensive of the 228 addresses on Bryntirion, Ynysboeth, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £76k less expensive than the typical property.

• Penrhiwceiber

  |

  1.4 km away
• Quakers Yard

  |

  1.7 km away
• Abercynon

  |

  2.2 km away

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