According to data from HM Land Registry, 22, Allen Street, Mountain Ash sits on a plot of 107 m².

We have plot size data on 28 out of 32 other houses in the postcode and 22, Allen Street, Mountain Ash sits on the 21st largest plot.

22, Allen Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 27 Jun 2016.

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, 22, Allen Street, Mountain Ash was last sold on 30th April 2025 for £120,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since April 2025, the market for similar properties has risen by 5.3%.

• Sold Apr 2025£120,000
• Sold Oct 2012£68,000

According to the Land Registry and our network of Estate Agents, there have been 145 sales of properties similar to 22, Allen Street, Mountain Ash within a radius of 600 metres since 2019.

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

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 Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• 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 Apr 2024£81,000 | 3 Bed House28, Duffryn Street, Mountain Ash, CF45 3NU28, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2023£100,000 | 3 Bed House82, Phillip Street, Mountain Ash, CF45 4BG82, 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 Mar 2023£110,000 | 3 Bed House45, Arnold Street, Mountain Ash, CF45 4LF45, Arnold Street, Mountain Ash, CF45 4LF
• Sold Jul 2022£75,000 | 3 Bed House24A, Allen Street, Mountain Ash, CF45 4BD24A, 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 Nov 2021£63,250 | 3 Bed House34, Seymour Street, Mountain Ash, CF45 4BL34, Seymour Street, Mountain Ash, CF45 4BL
• 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 Feb 2021£83,000 | 3 Bed House27, Seymour Street, Mountain Ash, CF45 4BL27, Seymour Street, Mountain Ash, CF45 4BL
• Sold Nov 2020£65,000 | 3 Bed House23, Arnold Street, Mountain Ash, CF45 4LF23, Arnold Street, Mountain Ash, CF45 4LF
• Sold Nov 2020£55,000 | 3 Bed House46, Phillip Street, Mountain Ash, CF45 4BG46, Phillip Street, Mountain Ash, CF45 4BG
• Sold Apr 2020£58,000 | 3 Bed House4, Allen Street, Mountain Ash, CF45 4BD4, Allen Street, Mountain Ash, CF45 4BD
• Sold Aug 2019£44,000 | 3 Bed House5, Allen Street, Mountain Ash, CF45 4BD5, Allen Street, Mountain Ash, CF45 4BD

Allen Street, Mountain Ash, CF45 has a total of 63 addresses. According to our analysis of all the public data, 22, Allen Street, Mountain Ash is the 56th largest and the 57th most expensive property on the street.

When compared to the postcode district it is £45k less expensive than the average property in CF45.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.2 km away
• Penrhiwceiber

  |

  2.1 km away

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