According to data from HM Land Registry, 70, Lock Street, Mountain Ash sits on a plot of 128 m².

We have plot size data on 41 out of 49 other houses in the postcode and 70, Lock Street, Mountain Ash sits on the 30th largest plot.

70, Lock Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 11 Oct 2013.

The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.

According to the Land Registry and our network of Estate Agents, there have been 137 sales of properties similar to 70, Lock Street, Mountain Ash within a radius of 1.3 kilometres over the last 2 years.

The most recent example is 20, Fife Street, Mountain Ash, CF45 4TU, a freehold house which sold for £170,000 on the 5th December 2025.

Read more about house prices in CF45.

• Sold Dec 2025£170,000 | 3 Bed House20, Fife Street, Mountain Ash, CF45 4TU20, Fife Street, Mountain Ash, CF45 4TU
• Sold Apr 2023£165,000 | 3 Bed House15, Fife Street, Mountain Ash, CF45 4TU15, Fife Street, Mountain Ash, CF45 4TU
• Sold Mar 2021£143,000 | 3 Bed House7, Fife Street, Mountain Ash, CF45 4TU7, Fife Street, Mountain Ash, CF45 4TU

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Lock Street, Abercynon, Mountain Ash, CF45 has a total of 82 addresses. According to our analysis of all the public data, 70, Lock Street, Mountain Ash is the 11th largest and the 20th most expensive property on the street.

When compared to the postcode district it is £15k more expensive than the average property in CF45.

• Abercynon

  |

  700 m away
• Quakers Yard

  |

  1.3 km away
• Penrhiwceiber

  |

  3.5 km away

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