11, 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 13th largest.

11, Walsh Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Jan 2015.

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

Land Registry records and our Estate Agent network show 123 sales of comparable properties within 1.6 kilometres of 11, 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 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 Aug 2024£100,000 | 3 Bed House55, Avondale Street, Mountain Ash, CF45 4YY55, Avondale Street, Mountain Ash, CF45 4YY
• 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 Apr 2022£67,500 | 3 Bed House40, Avondale Street, Mountain Ash, CF45 4YY40, Avondale Street, Mountain Ash, CF45 4YY
• Sold Dec 2019£39,999 | 3 Bed House45, Avondale Street, Mountain Ash, CF45 4YY45, Avondale Street, Mountain Ash, CF45 4YY
• Sold Nov 2018£82,000 | 3 Bed House39, Walsh Street, Mountain Ash, CF45 4YS39, Walsh Street, Mountain Ash, CF45 4YS
• Sold Jul 2018£26,000 | 3 Bed House26, Walsh Street, Mountain Ash, CF45 4YS26, Walsh Street, Mountain Ash, CF45 4YS
• Sold Apr 2017£63,500 | 3 Bed House4, Bagot Street, Mountain Ash, CF45 4YW4, Bagot Street, Mountain Ash, CF45 4YW
• 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 Mar 2009£65,000 | 3 Bed House10, Walsh Street, Mountain Ash, CF45 4YS10, 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 11, Walsh Street, Mountain Ash as the 33rd largest and the 34th most expensive of the 39 addresses on Walsh Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £70k 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.