38, Allen Street, Mountain Ash occupies a 288 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 6th largest.

38, Allen Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 05 Oct 2011.

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

38, Allen Street, Mountain Ash last changed hands on 30th October 2020, selling for £149,950. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has risen by 35.7% since October 2020.

• Sold Oct 2020£149,950
• Sold Oct 2007£149,950
• Sold Mar 2004£97,000

Land Registry records and our Estate Agent network show 75 sales of comparable properties within 690 metres of 38, Allen Street, Mountain Ash since 2017.

Most recently, 10, The Triangle, Mountain Ash, CF45 4BA, a freehold house, sold at £160,000 on the 20th February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£160,000 | 3 Bed House10, The Triangle, Mountain Ash, CF45 4BA10, The Triangle, Mountain Ash, CF45 4BA
• Sold Feb 2026£158,000 | 3 Bed House24, Richmond Road, Mountain Ash, CF45 4AN24, Richmond Road, Mountain Ash, CF45 4AN
• Sold Oct 2025£130,000 | 3 Bed House26, The Triangle, Mountain Ash, CF45 4BA26, The Triangle, Mountain Ash, CF45 4BA
• Sold Oct 2024£148,500 | 3 Bed House33, Phillip Street, Mountain Ash, CF45 4BE33, Phillip Street, Mountain Ash, CF45 4BE
• Sold Mar 2024£144,000 | 3 Bed House24, The Triangle, Mountain Ash, CF45 4BA24, The Triangle, Mountain Ash, CF45 4BA
• 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 Dec 2022£180,000 | 3 Bed House23, Campbell Terrace, Mountain Ash, CF45 4AE23, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Aug 2022£185,000 | 3 Bed House19, Campbell Terrace, Mountain Ash, CF45 4AE19, Campbell Terrace, Mountain Ash, CF45 4AE
• 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 Jan 2022£85,000 | 3 Bed House21, The Triangle, Mountain Ash, CF45 4BA21, The Triangle, Mountain Ash, CF45 4BA
• Sold Dec 2021£150,000 | 3 Bed House25, The Triangle, Mountain Ash, CF45 4BA25, The Triangle, Mountain Ash, CF45 4BA
• Sold Oct 2021£150,000 | 3 Bed House2, Richmond Road, Mountain Ash, CF45 4AN2, Richmond Road, Mountain Ash, CF45 4AN
• Sold Aug 2021£125,000 | 3 Bed House13, Richmond Road, Mountain Ash, CF45 4AN13, Richmond Road, Mountain Ash, CF45 4AN
• Sold Apr 2021£146,000 | 3 Bed House8, Campbell Terrace, Mountain Ash, CF45 4AE8, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Feb 2021£123,000 | 3 Bed House30, The Triangle, Mountain Ash, CF45 4BA30, The Triangle, Mountain Ash, CF45 4BA
• Sold Nov 2019£62,000 | 3 Bed House36, Allen Street, Mountain Ash, CF45 4BB36, Allen Street, Mountain Ash, CF45 4BB
• Sold Oct 2018£75,000 | 3 Bed House10, Campbell Terrace, Mountain Ash, CF45 4AE10, Campbell Terrace, Mountain Ash, CF45 4AE
• Sold Apr 2017£90,000 | 3 Bed House5, Austin Street, Mountain Ash, CF45 4AF5, Austin Street, Mountain Ash, CF45 4AF

Our analysis of the public data ranks 38, Allen Street, Mountain Ash as the 22nd largest and the 18th most expensive of the 63 addresses on Allen Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £17k more 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.