According to data from HM Land Registry, 43, Pentwyn Avenue, Mountain Ash sits on a plot of 153 m².

We have plot size data on 63 out of 66 other houses in the postcode and 43, Pentwyn Avenue, Mountain Ash sits on the 28th largest plot.

43, Pentwyn Avenue, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 24 Nov 2020.

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 the Land Registry and our network of Estate Agents, there have been 59 sales of properties similar to 43, Pentwyn Avenue, Mountain Ash within a radius of 1.4 kilometres since 2018.

The most recent example is 206, Bryntirion, Mountain Ash, CF45 4EJ, a freehold house which sold for £80,000 on the 12th June 2026.

Read more about house prices in CF45.

• Sold Jun 2026£80,000 | 3 Bed House206, Bryntirion, Mountain Ash, CF45 4EJ206, Bryntirion, Mountain Ash, CF45 4EJ
• Sold May 2026£95,000 | 3 Bed House17, Homerton Street, Mountain Ash, CF45 4YP17, Homerton Street, Mountain Ash, CF45 4YP
• 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 May 2025£86,000 | 3 Bed House179, Bryntirion, Mountain Ash, CF45 4PJ179, Bryntirion, Mountain Ash, CF45 4PJ
• Sold Jun 2024£65,000 | 3 Bed House3, Homerton Street, Mountain Ash, CF45 4YP3, Homerton Street, Mountain Ash, CF45 4YP
• Sold Apr 2024£80,000 | 3 Bed House199, Bryntirion, Mountain Ash, CF45 4PJ199, Bryntirion, Mountain Ash, CF45 4PJ
• Sold Jan 2024£70,000 | 3 Bed House41, Pentwyn Avenue, Mountain Ash, CF45 4YE41, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Oct 2023£65,000 | 3 Bed House103, Pentwyn Avenue, Mountain Ash, CF45 4YE103, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Jun 2023£165,000 | 3 Bed House59, Pentwyn Avenue, Mountain Ash, CF45 4YE59, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Mar 2023£90,000 | 3 Bed House131, Pentwyn Avenue, Mountain Ash, CF45 4YE131, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Oct 2022£114,995 | 3 Bed House133, Bryntirion, Mountain Ash, CF45 4EX133, Bryntirion, Mountain Ash, CF45 4EX
• Sold Sep 2020£67,000 | 3 Bed House93, Pentwyn Avenue, Mountain Ash, CF45 4YE93, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold May 2020£44,000 | 3 Bed House99, Pentwyn Avenue, Mountain Ash, CF45 4YE99, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Mar 2020£40,000 | 3 Bed House105, Bryntirion, Mountain Ash, CF45 4EX105, Bryntirion, Mountain Ash, CF45 4EX
• Sold Dec 2019£60,000 | 3 Bed House89, Pentwyn Avenue, Mountain Ash, CF45 4YE89, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Nov 2019£35,000 | 3 Bed House63, Pentwyn Avenue, Mountain Ash, CF45 4YE63, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Aug 2019£50,000 | 3 Bed House3, Pentwyn Avenue, Mountain Ash, CF45 4YE3, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Feb 2019£30,000 | 3 Bed House1, Pentwyn Avenue, Mountain Ash, CF45 4YE1, Pentwyn Avenue, Mountain Ash, CF45 4YE
• Sold Jul 2018£48,000 | 3 Bed House113, Bryntirion, Mountain Ash, CF45 4EX113, Bryntirion, Mountain Ash, CF45 4EX

Pentwyn Avenue, Mountain Ash, CF45 has a total of 111 addresses. According to our analysis of all the public data, 43, Pentwyn Avenue, Mountain Ash is the 22nd largest and the 59th most expensive property on the street.

When compared to the postcode district it is £73k less expensive than the average property in CF45.

• Penrhiwceiber

  |

  1.0 km away
• Quakers Yard

  |

  2.2 km away
• Abercynon

  |

  2.7 km away

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