HM Land Registry records the plot of land for 36, Duffryn Street, Mountain Ash as measuring 120 m².

That makes it the 4th largest plot in the postcode, where 31 of the 35 other houses have recorded plot data.

The most recent sale of 36, Duffryn Street, Mountain Ash completed on 31st August 2007 at £74,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 88.4% over the period since August 2007.

• Sold Aug 2007£74,000
• Sold Jul 2002£28,000

Since 2017 162 properties similar to 36, Duffryn Street, Mountain Ash have sold within a radius of 510 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 17th December 2025, was 8, Woodland Terrace, Mountain Ash, CF45 3RF, a freehold house which sold for £95,000.

Read more about house prices in CF45.

• Sold Dec 2025£95,000 | 3 Bed House8, Woodland Terrace, Mountain Ash, CF45 3RF8, Woodland Terrace, Mountain Ash, CF45 3RF
• Sold Dec 2025£112,500 | 3 Bed House24, Pryce Street, Mountain Ash, CF45 3NT24, Pryce Street, Mountain Ash, CF45 3NT
• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Sep 2025£117,000 | 3 Bed House7A Quarry Cottages, Mountain Ash, CF45 3RN7A Quarry Cottages, Mountain Ash, CF45 3RN
• Sold Jul 2025£49,000 | 3 Bed House49, Commercial Street, Mountain Ash, CF45 3PS49, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jun 2025£85,000 | 3 Bed House10, Commercial Street, Mountain Ash, CF45 3PS10, Commercial Street, Mountain Ash, CF45 3PS
• Sold May 2025£67,000 | 3 Bed House20, Commercial Street, Mountain Ash, CF45 3PS20, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jan 2025£81,500 | 3 Bed House2, Cliff Street, Mountain Ash, CF45 3LE2, Cliff Street, Mountain Ash, CF45 3LE
• Sold Nov 2024£95,000 | 3 Bed House22, Commercial Street, Mountain Ash, CF45 3PS22, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jul 2024£77,000 | 3 Bed House15, Lyle Street, Mountain Ash, CF45 3RG15, Lyle Street, Mountain Ash, CF45 3RG
• Sold Mar 2024£110,000 | 3 Bed House13, Lyle Street, Mountain Ash, CF45 3RG13, Lyle Street, Mountain Ash, CF45 3RG
• Sold Dec 2022£110,000 | 3 Bed House24, Lyle Street, Mountain Ash, CF45 3RG24, Lyle Street, Mountain Ash, CF45 3RG
• Sold Apr 2022£65,000 | 3 Bed House13, Duffryn Street, Mountain Ash, CF45 3NU13, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Mar 2022£110,000 | 3 Bed House9, Duffryn Street, Mountain Ash, CF45 3NU9, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Sep 2021£95,000 | 3 Bed House8, Lyle Street, Mountain Ash, CF45 3RG8, Lyle Street, Mountain Ash, CF45 3RG
• Sold Jun 2021£120,000 | 3 Bed House10, Duffryn Street, Mountain Ash, CF45 3NU10, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2021£84,000 | 3 Bed House35, Duffryn Street, Mountain Ash, CF45 3NU35, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2021£68,000 | 3 Bed House58, Duffryn Street, Mountain Ash, CF45 3HR58, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Oct 2017£70,000 | 3 Bed House2, Napier Street, Mountain Ash, CF45 3HW2, Napier Street, Mountain Ash, CF45 3HW
• Sold Jan 2017£52,000 | 3 Bed House37, Duffryn Street, Mountain Ash, CF45 3NU37, Duffryn Street, Mountain Ash, CF45 3NU

Of the 93 addresses on Duffryn Street, Mountain Ash, CF45, 36, Duffryn Street, Mountain Ash comes out as the 5th largest and the 18th most expensive in our analysis of the public data.

It is also £41k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.1 km away
• Penrhiwceiber

  |

  2.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.