According to data from HM Land Registry, 63, Duffryn Street, Mountain Ash sits on a plot of 202 m².

We have plot size data on 26 out of 31 other houses in the postcode and 63, Duffryn Street, Mountain Ash sits on the 2nd largest plot.

63, Duffryn Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 16 Sep 2010.

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

According to HM Land Registry, 63, Duffryn Street, Mountain Ash was last sold on 21st October 2010 for £53,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since October 2010, the market for similar properties has risen by 88.4%.

• Sold Oct 2010£53,000
• Sold Nov 2002£43,950

According to the Land Registry and our network of Estate Agents, there have been 179 sales of properties similar to 63, Duffryn Street, Mountain Ash within a radius of 520 metres since 2017.

The most recent example is 29, Cliff Street, Mountain Ash, CF45 3LE, a freehold house which sold for £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 Sep 2025£112,000 | 3 Bed House31, Napier Street, Mountain Ash, CF45 3HW31, Napier Street, Mountain Ash, CF45 3HW
• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• 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 Jun 2024£55,000 | 3 Bed House53, Duffryn Street, Mountain Ash, CF45 3NL53, Duffryn Street, Mountain Ash, CF45 3NL
• Sold Apr 2024£37,000 | 3 Bed House38, Oxford Street, Mountain Ash, CF45 3HB38, Oxford Street, Mountain Ash, CF45 3HB
• Sold Mar 2024£119,000 | 3 Bed House45, Napier Street, Mountain Ash, CF45 3HW45, Napier Street, Mountain Ash, CF45 3HW
• Sold Dec 2023£56,500 | 3 Bed House58A, Duffryn Street, Mountain Ash, CF45 3HR58A, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Nov 2023£109,000 | 3 Bed House77, Duffryn Street, Mountain Ash, CF45 3HR77, Duffryn Street, Mountain Ash, CF45 3HR
• 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 Feb 2023£95,000 | 3 Bed House14, Cliff Street, Mountain Ash, CF45 3LE14, Cliff Street, Mountain Ash, CF45 3LE
• Sold Nov 2022£85,000 | 3 Bed House72, Duffryn Street, Mountain Ash, CF45 3HR72, Duffryn Street, Mountain Ash, CF45 3HR
• Sold May 2022£75,000 | 3 Bed House75, Duffryn Street, Mountain Ash, CF45 3HR75, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Mar 2022£55,000 | 3 Bed House1A, Cliff Street, Mountain Ash, CF45 3LE1A, Cliff Street, Mountain Ash, CF45 3LE
• Sold Mar 2021£78,000 | 3 Bed House73, Duffryn Street, Mountain Ash, CF45 3HR73, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Jan 2021£42,000 | 3 Bed House12, Oxford Street, Mountain Ash, CF45 3PL12, Oxford Street, Mountain Ash, CF45 3PL
• Sold Nov 2017£65,000 | 3 Bed House10, Dover Street, Mountain Ash, CF45 3HY10, Dover Street, Mountain Ash, CF45 3HY

Duffryn Street, Mountain Ash, CF45 has a total of 93 addresses. According to our analysis of all the public data, 63, Duffryn Street, Mountain Ash is the 57th largest and the 24th most expensive property on the street.

When compared to the postcode district it is £45k less expensive than the average property in CF45.

• Mountain Ash

  |

  200 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.