HM Land Registry records the plot of land for 73, Duffryn Street, Mountain Ash as measuring 99 m².

That makes it the 21st largest plot in the postcode, where 26 of the 31 other houses have recorded plot data.

73, Duffryn Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 03 Jul 2019.

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

The most recent sale of 73, Duffryn Street, Mountain Ash completed on 29th March 2021 at £78,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 40.0% over the period since March 2021.

• Sold Mar 2021£78,000

Since 2017 257 properties similar to 73, Duffryn Street, Mountain Ash have sold within a radius of 520 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 7th November 2025, was 81, Duffryn Street, Mountain Ash, CF45 3HR, a freehold house which sold for £115,000.

Read more about house prices in CF45.

• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Sep 2025£112,000 | 3 Bed House31, Napier Street, Mountain Ash, CF45 3HW31, Napier Street, Mountain Ash, CF45 3HW
• Sold Dec 2024£85,000 | 3 Bed House55, Napier Street, Mountain Ash, CF45 3HW55, Napier Street, Mountain Ash, CF45 3HW
• Sold Nov 2024£100,000 | 3 Bed House21, Dover Street, Mountain Ash, CF45 3HU21, Dover Street, Mountain Ash, CF45 3HU
• Sold Oct 2024£127,500 | 3 Bed House74, Duffryn Street, Mountain Ash, CF45 3HR74, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Oct 2024£55,000 | 3 Bed House39, Dover Street, Mountain Ash, CF45 3HU39, Dover Street, Mountain Ash, CF45 3HU
• Sold Mar 2024£119,000 | 3 Bed House45, Napier Street, Mountain Ash, CF45 3HW45, Napier Street, Mountain Ash, CF45 3HW
• Sold Oct 2023£88,500 | 3 Bed House54, Napier Street, Mountain Ash, CF45 3HW54, Napier Street, Mountain Ash, CF45 3HW
• Sold Aug 2023£60,000 | 3 Bed House7, Cliff Street, Mountain Ash, CF45 3LE7, Cliff Street, Mountain Ash, CF45 3LE
• Sold Aug 2023£100,000 | 3 Bed House57, Napier Street, Mountain Ash, CF45 3HW57, Napier Street, Mountain Ash, CF45 3HW
• Sold Jul 2023£85,000 | 3 Bed House82, Duffryn Street, Mountain Ash, CF45 3HR82, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Apr 2023£80,000 | 3 Bed House12, Stream Street, Mountain Ash, CF45 3LL12, Stream Street, Mountain Ash, CF45 3LL
• Sold Feb 2023£95,000 | 3 Bed House14, Cliff Street, Mountain Ash, CF45 3LE14, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jul 2022£87,500 | 3 Bed House35, Napier Street, Mountain Ash, CF45 3HW35, Napier Street, Mountain Ash, CF45 3HW
• Sold May 2022£75,000 | 3 Bed House75, Duffryn Street, Mountain Ash, CF45 3HR75, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Feb 2021£68,000 | 3 Bed House58, Duffryn Street, Mountain Ash, CF45 3HR58, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Dec 2019£40,600 | 3 Bed House79, Duffryn Street, Mountain Ash, CF45 3HR79, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Dec 2019£40,000 | 3 Bed House33, Dover Street, Mountain Ash, CF45 3HU33, Dover Street, Mountain Ash, CF45 3HU
• Sold Feb 2019£66,000 | 3 Bed House15, Dover Street, Mountain Ash, CF45 3HU15, Dover Street, Mountain Ash, CF45 3HU
• Sold Nov 2017£65,000 | 3 Bed House10, Dover Street, Mountain Ash, CF45 3HY10, Dover Street, Mountain Ash, CF45 3HY

Of the 93 addresses on Duffryn Street, Mountain Ash, CF45, 73, Duffryn Street, Mountain Ash comes out as the 27th largest and the 21st most expensive in our analysis of the public data.

It is also £43k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  200 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

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