10, Walsh Street, Mountain Ash occupies a 111 m² plot as recorded by HM Land Registry.

Of the 39 other houses in this postcode, 35 have recorded plot sizes, and this one ranks as the 12th largest.

10, Walsh Street, Mountain Ash has an Energy Performance Rating (EPC) of G. This is based on the most recent assessment, dated 16 Dec 2008.

The property is not connected to mains gas and has fully double glazed windows. It is heated using room heaters (electric).

10, Walsh Street, Mountain Ash last changed hands on 13th March 2009, selling for £65,000. 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 171.4% since March 2009.

• Sold Mar 2009£65,000
• Sold Oct 2002£16,000

Land Registry records and our Estate Agent network show 170 sales of comparable properties within 1.6 kilometres of 10, Walsh Street, Mountain Ash since 2007.

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 Oct 2024£115,000 | 3 Bed House74, Pentwyn Avenue, Mountain Ash, CF45 4YF74, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Aug 2024£100,000 | 3 Bed House55, Avondale Street, Mountain Ash, CF45 4YY55, Avondale Street, Mountain Ash, CF45 4YY
• Sold Jun 2024£65,000 | 3 Bed House3, Homerton Street, Mountain Ash, CF45 4YP3, Homerton Street, Mountain Ash, CF45 4YP
• Sold May 2024£95,000 | 3 Bed House4, Commercial Place, Mountain Ash, CF45 4YR4, Commercial Place, Mountain Ash, CF45 4YR
• Sold Apr 2024£80,000 | 3 Bed House199, Bryntirion, Mountain Ash, CF45 4PJ199, Bryntirion, Mountain Ash, CF45 4PJ
• Sold Mar 2024£58,000 | 3 Bed House58, Avondale Street, Mountain Ash, CF45 4YY58, Avondale Street, Mountain Ash, CF45 4YY
• Sold Aug 2022£80,000 | 3 Bed House56, Avondale Street, Mountain Ash, CF45 4YY56, Avondale Street, Mountain Ash, CF45 4YY
• Sold Jul 2022£105,000 | 3 Bed House13, Walsh Street, Mountain Ash, CF45 4YS13, Walsh Street, Mountain Ash, CF45 4YS
• Sold Nov 2018£82,000 | 3 Bed House39, Walsh Street, Mountain Ash, CF45 4YS39, Walsh Street, Mountain Ash, CF45 4YS
• Sold Dec 2015£18,000 | 3 Bed House6, Walsh Street, Mountain Ash, CF45 4YS6, Walsh Street, Mountain Ash, CF45 4YS
• Sold Apr 2015£47,000 | 3 Bed House3, Walsh Street, Mountain Ash, CF45 4YS3, Walsh Street, Mountain Ash, CF45 4YS
• Sold May 2014£40,000 | 3 Bed House4, Walsh Street, Mountain Ash, CF45 4YS4, Walsh Street, Mountain Ash, CF45 4YS
• Sold Jul 2013£55,000 | 3 Bed House35, Walsh Street, Mountain Ash, CF45 4YS35, Walsh Street, Mountain Ash, CF45 4YS
• Sold Feb 2010£27,000 | 3 Bed House24, Walsh Street, Mountain Ash, CF45 4YS24, Walsh Street, Mountain Ash, CF45 4YS
• Sold Nov 2007£81,500 | 3 Bed House5, Walsh Street, Mountain Ash, CF45 4YS5, Walsh Street, Mountain Ash, CF45 4YS

Our analysis of the public data ranks 10, Walsh Street, Mountain Ash as the 27th largest and the 28th most expensive of the 39 addresses on Walsh Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £67k less expensive than the typical property.

• Penrhiwceiber

  |

  1.3 km away
• Quakers Yard

  |

  1.7 km away
• Abercynon

  |

  2.3 km away

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