According to data from HM Land Registry, 39, Walsh Street, Mountain Ash sits on a plot of 107 m².

We have plot size data on 35 out of 39 other houses in the postcode and 39, Walsh Street, Mountain Ash sits on the 28th largest plot.

39, Walsh Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 29 Aug 2009.

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

According to HM Land Registry, 39, Walsh Street, Mountain Ash was last sold on 9th November 2018 for £82,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since November 2018, the market for similar properties has risen by 142.2%.

• Sold Nov 2018£82,000
• Sold Nov 2009£55,000

According to the Land Registry and our network of Estate Agents, there have been 168 sales of properties similar to 39, Walsh Street, Mountain Ash within a radius of 1.6 kilometres since 2009.

The most recent example is 96, Bryntirion, Mountain Ash, CF45 4EX, a freehold house which sold for £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 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 Jan 2022£110,000 | 3 Bed House57, Avondale Street, Mountain Ash, CF45 4YY57, Avondale Street, Mountain Ash, CF45 4YY
• Sold Jun 2016£68,500 | 3 Bed House17, Walsh Street, Mountain Ash, CF45 4YS17, 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 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 2009£39,750 | 3 Bed House38, Walsh Street, Mountain Ash, CF45 4YS38, 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

Walsh Street, Mountain Ash, CF45 has a total of 39 addresses. According to our analysis of all the public data, 39, Walsh Street, Mountain Ash is the 21st largest and the 22nd most expensive property on the street.

When compared to the postcode district it is £65k less expensive than the average property in CF45.

• Penrhiwceiber

  |

  1.3 km away
• Quakers Yard

  |

  1.7 km away
• Abercynon

  |

  2.3 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.