According to data from HM Land Registry, 29, Cliff Street, Mountain Ash sits on a plot of 75 m².

We have plot size data on 35 out of 42 other houses in the postcode and 29, Cliff Street, Mountain Ash sits on the 31st largest plot.

29, Cliff Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 04 Sep 2025.

The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 29, Cliff Street, Mountain Ash was last sold on 14th November 2025 for £120,000 and was recorded as a freehold house.

The property has had 3 sales since 1995.

Since November 2025, the market for similar properties has risen by 19.9%.

• Sold Nov 2025£120,000
• Sold Feb 2024£67,000
• Sold Apr 2022£60,000

According to the Land Registry and our network of Estate Agents, there have been 117 sales of properties similar to 29, Cliff Street, Mountain Ash within a radius of 590 metres since 2017.

The most recent example is 33, Duffryn Street, Mountain Ash, CF45 3NU, a freehold house which sold for £95,000 on the 13th June 2025.

Read more about house prices in CF45.

• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Jan 2025£225,000 | 3 Bed House115, High Street, Mountain Ash, CF45 3LN115, High Street, Mountain Ash, CF45 3LN
• Sold Nov 2024£100,000 | 3 Bed House21, Dover Street, Mountain Ash, CF45 3HU21, Dover Street, Mountain Ash, CF45 3HU
• Sold Jul 2024£72,000 | 3 Bed House20, Stream Street, Mountain Ash, CF45 3LL20, Stream Street, Mountain Ash, CF45 3LL
• Sold Jun 2024£75,000 | 3 Bed House16, Stream Street, Mountain Ash, CF45 3LL16, Stream Street, Mountain Ash, CF45 3LL
• Sold Apr 2024£81,000 | 3 Bed House28, Duffryn Street, Mountain Ash, CF45 3NU28, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2024£89,000 | 3 Bed House24, Napier Street, Mountain Ash, CF45 3HW24, 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 Apr 2023£108,000 | 3 Bed House13, Stream Street, Mountain Ash, CF45 3LL13, 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 Nov 2022£85,000 | 3 Bed House72, Duffryn Street, Mountain Ash, CF45 3HR72, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Jul 2022£55,000 | 3 Bed House32, Dover Street, Mountain Ash, CF45 3HU32, Dover Street, Mountain Ash, CF45 3HU
• Sold Mar 2022£80,000 | 3 Bed House26, Stream Street, Mountain Ash, CF45 3LL26, Stream Street, Mountain Ash, CF45 3LL
• Sold Mar 2022£55,000 | 3 Bed House1A, Cliff Street, Mountain Ash, CF45 3LE1A, Cliff Street, Mountain Ash, CF45 3LE
• Sold Oct 2021£77,000 | 3 Bed House37, Dover Street, Mountain Ash, CF45 3HU37, Dover Street, Mountain Ash, CF45 3HU
• Sold Jun 2019£54,500 | 3 Bed House18, Stream Street, Mountain Ash, CF45 3LL18, Stream Street, Mountain Ash, CF45 3LL
• Sold Dec 2017£35,000 | 3 Bed House9, Cliff Street, Mountain Ash, CF45 3LE9, Cliff Street, Mountain Ash, CF45 3LE
• Sold Mar 2017£58,000 | 3 Bed House25, Cliff Street, Mountain Ash, CF45 3LE25, Cliff Street, Mountain Ash, CF45 3LE

Cliff Street, Mountain Ash, CF45 has a total of 42 addresses. According to our analysis of all the public data, 29, Cliff Street, Mountain Ash is the 27th largest and the 27th most expensive property on the street.

When compared to the postcode district it is £57k less expensive than the average property in CF45.

• Mountain Ash

  |

  300 m away
• Fernhill

  |

  1.2 km away
• Penrhiwceiber

  |

  1.9 km away

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