According to data from HM Land Registry, 48, Allen Street, Mountain Ash sits on a plot of 279 m².

We have plot size data on 25 out of 31 other houses in the postcode and 48, Allen Street, Mountain Ash sits on the 7th largest plot.

According to HM Land Registry, 48, Allen Street, Mountain Ash was last sold on 17th December 2008 for £70,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since December 2008, the market for similar properties has risen by 71.5%.

• Sold Dec 2008£70,000

According to the Land Registry and our network of Estate Agents, there have been 77 sales of properties similar to 48, Allen Street, Mountain Ash within a radius of 720 metres since 2016.

The most recent example is 27, The Triangle, Mountain Ash, CF45 4BA, a freehold house which sold for £175,000 on the 18th July 2025.

Read more about house prices in CF45.

• Sold Jul 2025£175,000 | 3 Bed House27, The Triangle, Mountain Ash, CF45 4BA27, The Triangle, Mountain Ash, CF45 4BA
• Sold Sep 2024£85,000 | 3 Bed House42, Allen Street, Mountain Ash, CF45 4BB42, Allen Street, Mountain Ash, CF45 4BB
• Sold Jan 2024£105,000 | 3 Bed House12, Phillip Street, Mountain Ash, CF45 4BE12, Phillip Street, Mountain Ash, CF45 4BE
• Sold Oct 2023£185,000 | 3 Bed House3, Richmond Road, Mountain Ash, CF45 4AN3, Richmond Road, Mountain Ash, CF45 4AN
• Sold Aug 2023£115,000 | 3 Bed House47, Allen Street, Mountain Ash, CF45 4BB47, Allen Street, Mountain Ash, CF45 4BB
• Sold Aug 2022£90,000 | 3 Bed House37, Allen Street, Mountain Ash, CF45 4BB37, Allen Street, Mountain Ash, CF45 4BB
• Sold Jun 2022£129,995 | 3 Bed House4, Copley Street, Mountain Ash, CF45 4AS4, Copley Street, Mountain Ash, CF45 4AS
• Sold Jun 2022£125,000 | 3 Bed House45, Allen Street, Mountain Ash, CF45 4BB45, Allen Street, Mountain Ash, CF45 4BB
• Sold Jun 2022£149,995 | 3 Bed House29, The Triangle, Mountain Ash, CF45 4BA29, The Triangle, Mountain Ash, CF45 4BA
• Sold Apr 2022£135,000 | 3 Bed HouseTy Cerrig, Allen Street, Mountain Ash, CF45 4BBTy Cerrig, Allen Street, Mountain Ash, CF45 4BB
• Sold Feb 2022£85,000 | 3 Bed House44, Allen Street, Mountain Ash, CF45 4BB44, Allen Street, Mountain Ash, CF45 4BB
• Sold Jan 2022£85,000 | 3 Bed House21, The Triangle, Mountain Ash, CF45 4BA21, The Triangle, Mountain Ash, CF45 4BA
• Sold Apr 2020£77,000 | 3 Bed House19, Richmond Road, Mountain Ash, CF45 4AN19, Richmond Road, Mountain Ash, CF45 4AN
• Sold Nov 2019£62,000 | 3 Bed House36, Allen Street, Mountain Ash, CF45 4BB36, Allen Street, Mountain Ash, CF45 4BB
• Sold Nov 2019£108,000 | 3 Bed House3, Copley Street, Mountain Ash, CF45 4AS3, Copley Street, Mountain Ash, CF45 4AS
• Sold Sep 2019£137,000 | 3 Bed House49, Allen Street, Mountain Ash, CF45 4BB49, Allen Street, Mountain Ash, CF45 4BB
• Sold Jul 2019£90,000 | 3 Bed House27, Copley Street, Mountain Ash, CF45 4AS27, Copley Street, Mountain Ash, CF45 4AS
• Sold Jan 2019£112,500 | 3 Bed House58, Allen Street, Mountain Ash, CF45 4BB58, Allen Street, Mountain Ash, CF45 4BB
• Sold Jul 2018£65,000 | 3 Bed House23, Copley Street, Mountain Ash, CF45 4AS23, Copley Street, Mountain Ash, CF45 4AS
• Sold Apr 2016£136,000 | 3 Bed House22, Richmond Road, Mountain Ash, CF45 4AN22, Richmond Road, Mountain Ash, CF45 4AN

Allen Street, Mountain Ash, CF45 has a total of 63 addresses. According to our analysis of all the public data, 48, Allen Street, Mountain Ash is the 38th largest and the 23rd most expensive property on the street.

When compared to the postcode district it is £2k more expensive than the average property in CF45.

• Mountain Ash

  |

  500 m away
• Fernhill

  |

  1.3 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.