49, Allen Street, Mountain Ash occupies a 197 m² plot as recorded by HM Land Registry.

Of the 31 other houses in this postcode, 25 have recorded plot sizes, and this one ranks as the 10th largest.

49, Allen Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Jun 2019.

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

49, Allen Street, Mountain Ash last changed hands on 18th September 2019, selling for £137,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 49.1% since September 2019.

• Sold Sep 2019£137,000
• Sold Jun 2018£61,000

Land Registry records and our Estate Agent network show 75 sales of comparable properties within 720 metres of 49, Allen Street, Mountain Ash since 2019.

Most recently, 27, The Triangle, Mountain Ash, CF45 4BA, a freehold house, sold at £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 Mar 2025£135,000 | 3 Bed House86, Phillip Street, Mountain Ash, CF45 4BG86, Phillip Street, Mountain Ash, CF45 4BG
• Sold Oct 2024£80,000 | 3 Bed House18, Phillip Street, Mountain Ash, CF45 4BE18, Phillip Street, Mountain Ash, CF45 4BE
• Sold Sep 2024£85,000 | 3 Bed House42, Allen Street, Mountain Ash, CF45 4BB42, Allen Street, Mountain Ash, CF45 4BB
• Sold Jul 2024£140,000 | 3 Bed House26, Phillip Street, Mountain Ash, CF45 4BE26, Phillip Street, Mountain Ash, CF45 4BE
• Sold Oct 2023£125,100 | 3 Bed House21, Phillip Street, Mountain Ash, CF45 4BE21, Phillip Street, Mountain Ash, CF45 4BE
• Sold Aug 2023£115,000 | 3 Bed House47, Allen Street, Mountain Ash, CF45 4BB47, Allen Street, Mountain Ash, CF45 4BB
• Sold Jun 2023£117,500 | 3 Bed House21, Copley Street, Mountain Ash, CF45 4AS21, Copley Street, Mountain Ash, CF45 4AS
• Sold Aug 2022£90,000 | 3 Bed House37, Allen Street, Mountain Ash, CF45 4BB37, Allen Street, Mountain Ash, CF45 4BB
• Sold Jun 2022£125,000 | 3 Bed House45, Allen Street, Mountain Ash, CF45 4BB45, Allen Street, Mountain Ash, CF45 4BB
• Sold May 2022£92,500 | 3 Bed House16, Copley Street, Mountain Ash, CF45 4AS16, Copley Street, Mountain Ash, CF45 4AS
• Sold Feb 2022£85,000 | 3 Bed House44, Allen Street, Mountain Ash, CF45 4BB44, Allen Street, Mountain Ash, CF45 4BB
• Sold Feb 2022£127,000 | 3 Bed House14, Copley Street, Mountain Ash, CF45 4AS14, Copley Street, Mountain Ash, CF45 4AS
• 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 Aug 2020£210,000 | 3 Bed House9, Copley Street, Mountain Ash, CF45 4AS9, Copley Street, Mountain Ash, CF45 4AS
• Sold Aug 2020£72,000 | 3 Bed House58, Phillip Street, Mountain Ash, CF45 4BG58, Phillip Street, Mountain Ash, CF45 4BG
• Sold Apr 2020£77,000 | 3 Bed House19, Richmond Road, Mountain Ash, CF45 4AN19, Richmond Road, Mountain Ash, CF45 4AN
• Sold Jan 2020£111,000 | 3 Bed House11, Copley Street, Mountain Ash, CF45 4AS11, Copley Street, Mountain Ash, CF45 4AS
• Sold Nov 2019£62,000 | 3 Bed House36, Allen Street, Mountain Ash, CF45 4BB36, Allen Street, Mountain Ash, CF45 4BB

Our analysis of the public data ranks 49, Allen Street, Mountain Ash as the 50th largest and the 31st most expensive of the 63 addresses on Allen Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £13k less expensive than the typical property.

• Mountain Ash

  |

  500 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  2.1 km away

Environment Agency data suggests this area has a Very Low risk of flooding.