6, Duffryn Street, Mountain Ash occupies a 88 m² plot as recorded by HM Land Registry.

Of the 35 other houses in this postcode, 31 have recorded plot sizes, and this one ranks as the 19th largest.

6, Duffryn Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 01 Dec 2023.

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

6, Duffryn Street, Mountain Ash last changed hands on 19th May 2004, selling for £38,500. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

• Sold May 2004£38,500
• Sold Dec 2003£32,000

Land Registry records and our Estate Agent network show 158 sales of comparable properties within 550 metres of 6, Duffryn Street, Mountain Ash since 2016.

Most recently, 29, Cliff Street, Mountain Ash, CF45 3LE, a freehold house, sold at £120,000 on the 14th November 2025.

Read more about house prices in CF45.

• Sold Nov 2025£120,000 | 3 Bed House29, Cliff Street, Mountain Ash, CF45 3LE29, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2024£68,000 | 3 Bed House5, Fountain Street, Mountain Ash, CF45 3PA5, Fountain Street, Mountain Ash, CF45 3PA
• Sold Nov 2024£100,000 | 3 Bed House21, Dover Street, Mountain Ash, CF45 3HU21, Dover Street, Mountain Ash, CF45 3HU
• Sold Apr 2024£81,000 | 3 Bed House28, Duffryn Street, Mountain Ash, CF45 3NU28, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2023£56,500 | 3 Bed House58A, Duffryn Street, Mountain Ash, CF45 3HR58A, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Sep 2023£75,000 | 3 Bed House5, Duffryn Street, Mountain Ash, CF45 3NU5, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Aug 2023£60,000 | 3 Bed House7, Cliff Street, Mountain Ash, CF45 3LE7, Cliff Street, Mountain Ash, CF45 3LE
• Sold Aug 2023£112,500 | 3 Bed House4, Woodland Terrace, Mountain Ash, CF45 3RF4, Woodland Terrace, Mountain Ash, CF45 3RF
• Sold Feb 2023£95,000 | 3 Bed House4, Duffryn Street, Mountain Ash, CF45 3NU4, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2023£95,000 | 3 Bed House14, Cliff Street, Mountain Ash, CF45 3LE14, Cliff Street, Mountain Ash, CF45 3LE
• Sold Aug 2022£72,500 | 3 Bed House30, Duffryn Street, Mountain Ash, CF45 3NU30, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Jun 2021£78,000 | 3 Bed House26, Duffryn Street, Mountain Ash, CF45 3NU26, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2021£83,000 | 3 Bed House16, Duffryn Street, Mountain Ash, CF45 3NU16, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Jul 2019£55,500 | 3 Bed House18, Commercial Street, Mountain Ash, CF45 3PS18, Commercial Street, Mountain Ash, CF45 3PS
• Sold Apr 2019£70,000 | 3 Bed House24, Duffryn Street, Mountain Ash, CF45 3NU24, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2018£52,000 | 3 Bed House18, Duffryn Street, Mountain Ash, CF45 3NU18, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Nov 2018£64,000 | 3 Bed House31, Duffryn Street, Mountain Ash, CF45 3NU31, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Sep 2018£36,000 | 3 Bed House21, Duffryn Street, Mountain Ash, CF45 3NU21, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Jul 2016£45,000 | 3 Bed House7, Duffryn Street, Mountain Ash, CF45 3NU7, Duffryn Street, Mountain Ash, CF45 3NU

Our analysis of the public data ranks 6, Duffryn Street, Mountain Ash as the 55th largest and the 66th most expensive of the 93 addresses on Duffryn Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £57k less expensive than the typical property.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.1 km away
• Penrhiwceiber

  |

  2.1 km away

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