29, Allen Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 29 May 2026.

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

Since 2018 212 properties similar to 29, Allen Street, Mountain Ash have sold within a radius of 620 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 4th July 2025, was 50, Phillip Street, Mountain Ash, CF45 4BG, a freehold house which sold for £125,000.

Read more about house prices in CF45.

• Sold Jul 2025£125,000 | 3 Bed House50, Phillip Street, Mountain Ash, CF45 4BG50, Phillip Street, Mountain Ash, CF45 4BG
• Sold Apr 2025£120,000 | 3 Bed House22, Allen Street, Mountain Ash, CF45 4BD22, Allen Street, Mountain Ash, CF45 4BD
• Sold Apr 2025£82,600 | 3 Bed House54, Arnold Street, Mountain Ash, CF45 4LF54, Arnold Street, Mountain Ash, CF45 4LF
• Sold Oct 2024£80,000 | 3 Bed House18, Phillip Street, Mountain Ash, CF45 4BE18, Phillip Street, Mountain Ash, CF45 4BE
• Sold Jul 2024£140,000 | 3 Bed House26, Phillip Street, Mountain Ash, CF45 4BE26, Phillip Street, Mountain Ash, CF45 4BE
• Sold May 2024£138,500 | 3 Bed House42, Phillip Street, Mountain Ash, CF45 4BG42, Phillip Street, Mountain Ash, CF45 4BG
• Sold Nov 2023£90,000 | 3 Bed House57, Arnold Street, Mountain Ash, CF45 4LF57, Arnold Street, Mountain Ash, CF45 4LF
• Sold Oct 2023£125,100 | 3 Bed House21, Phillip Street, Mountain Ash, CF45 4BE21, Phillip Street, Mountain Ash, CF45 4BE
• Sold Jun 2023£117,500 | 3 Bed House21, Copley Street, Mountain Ash, CF45 4AS21, Copley Street, Mountain Ash, CF45 4AS
• Sold Apr 2023£116,000 | 3 Bed House33, Arnold Street, Mountain Ash, CF45 4LF33, Arnold Street, Mountain Ash, CF45 4LF
• Sold Jul 2022£135,000 | 3 Bed House17, Allen Street, Mountain Ash, CF45 4BD17, Allen Street, Mountain Ash, CF45 4BD
• Sold May 2022£92,500 | 3 Bed House16, Copley Street, Mountain Ash, CF45 4AS16, Copley Street, Mountain Ash, CF45 4AS
• Sold Apr 2022£106,000 | 3 Bed House16, Allen Street, Mountain Ash, CF45 4BD16, Allen Street, Mountain Ash, CF45 4BD
• Sold Mar 2022£68,000 | 3 Bed House75, Phillip Street, Mountain Ash, CF45 4BG75, Phillip Street, Mountain Ash, CF45 4BG
• Sold Feb 2022£127,000 | 3 Bed House14, Copley Street, Mountain Ash, CF45 4AS14, Copley Street, Mountain Ash, CF45 4AS
• Sold Oct 2021£99,000 | 3 Bed House41, Phillip Street, Mountain Ash, CF45 4BG41, Phillip Street, Mountain Ash, CF45 4BG
• Sold Mar 2021£57,500 | 3 Bed House43, Phillip Street, Mountain Ash, CF45 4BG43, Phillip Street, Mountain Ash, CF45 4BG
• Sold Mar 2021£65,000 | 3 Bed House23, Phillip Street, Mountain Ash, CF45 4BE23, Phillip Street, Mountain Ash, CF45 4BE
• Sold Nov 2020£55,000 | 3 Bed House72, Phillip Street, Mountain Ash, CF45 4BG72, Phillip Street, Mountain Ash, CF45 4BG
• Sold May 2018£70,000 | 3 Bed House12, Allen Street, Mountain Ash, CF45 4BD12, Allen Street, Mountain Ash, CF45 4BD

Of the 63 addresses on Allen Street, Mountain Ash, CF45, 29, Allen Street, Mountain Ash comes out as the 48th largest and the 48th most expensive in our analysis of the public data.

It is also £36k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.2 km away
• Penrhiwceiber

  |

  2.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.