According to data from HM Land Registry, 121, High Street, Mountain Ash sits on a plot of 95 m².

We have plot size data on 37 out of 41 other houses in the postcode and 121, High Street, Mountain Ash sits on the 27th largest plot.

121, High Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 25 Oct 2016.

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, 121, High Street, Mountain Ash was last sold on 3rd March 2017 for £38,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since March 2017, the market for similar properties has risen by 104.2%.

• Sold Mar 2017£38,000

According to the Land Registry and our network of Estate Agents, there have been 26 sales of properties similar to 121, High Street, Mountain Ash within a radius of 570 metres since 2007.

The most recent example is 32, High Street, Mountain Ash, CF45 3PE, a freehold house which sold for £53,000 on the 2nd February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£53,000 | 3 Bed House32, High Street, Mountain Ash, CF45 3PE32, High Street, Mountain Ash, CF45 3PE
• Sold Nov 2025£60,000 | 3 Bed House32, Napier Street, Mountain Ash, CF45 3HW32, Napier Street, Mountain Ash, CF45 3HW
• Sold Oct 2024£67,000 | 3 Bed House20, Chancery Lane, Mountain Ash, CF45 3NW20, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Aug 2024£30,000 | 3 Bed House40, High Street, Mountain Ash, CF45 3PE40, High Street, Mountain Ash, CF45 3PE
• Sold Jul 2024£63,000 | 3 Bed House28, Napier Street, Mountain Ash, CF45 3HW28, Napier Street, Mountain Ash, CF45 3HW
• Sold Jul 2024£76,000 | 3 Bed House72, High Street, Mountain Ash, CF45 3LD72, High Street, Mountain Ash, CF45 3LD
• Sold Jun 2024£39,950 | 3 Bed House48, Commercial Street, Mountain Ash, CF45 3PW48, Commercial Street, Mountain Ash, CF45 3PW
• Sold May 2023£68,000 | 3 Bed House44, Commercial Street, Mountain Ash, CF45 3PW44, Commercial Street, Mountain Ash, CF45 3PW
• Sold May 2022£68,000 | 3 Bed House20, High Street, Mountain Ash, CF45 3PE20, High Street, Mountain Ash, CF45 3PE
• Sold Apr 2022£95,955 | 3 Bed House5, Graig Street, Mountain Ash, CF45 3PD5, Graig Street, Mountain Ash, CF45 3PD
• Sold Apr 2021£70,000 | 3 Bed House96, High Street, Mountain Ash, CF45 3LN96, High Street, Mountain Ash, CF45 3LN
• Sold Apr 2021£73,000 | 3 Bed House14, Chancery Lane, Mountain Ash, CF45 3NW14, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Dec 2020£66,000 | 3 Bed House123, High Street, Mountain Ash, CF45 3LN123, High Street, Mountain Ash, CF45 3LN
• Sold Nov 2020£54,000 | 3 Bed House15, Stream Street, Mountain Ash, CF45 3LL15, Stream Street, Mountain Ash, CF45 3LL
• Sold May 2020£62,000 | 3 Bed House73, High Street, Mountain Ash, CF45 3LD73, High Street, Mountain Ash, CF45 3LD
• Sold Feb 2019£54,000 | 3 Bed House3, Foundry Terrace, Mountain Ash, CF45 3HH3, Foundry Terrace, Mountain Ash, CF45 3HH
• Sold Jul 2018£39,999 | 3 Bed House34, High Street, Mountain Ash, CF45 3PE34, High Street, Mountain Ash, CF45 3PE
• Sold Feb 2014£32,000 | 3 Bed House85, High Street, Mountain Ash, CF45 3LN85, High Street, Mountain Ash, CF45 3LN
• Sold Sep 2009£40,000 | 3 Bed House106, High Street, Mountain Ash, CF45 3LN106, High Street, Mountain Ash, CF45 3LN
• Sold Oct 2007£59,950 | 3 Bed House100, High Street, Mountain Ash, CF45 3LN100, High Street, Mountain Ash, CF45 3LN

High Street, Mountain Ash, CF45 has a total of 135 addresses. According to our analysis of all the public data, 121, High Street, Mountain Ash is the 83rd largest and the 77th most expensive property on the street.

When compared to the postcode district it is £82k less expensive than the average property in CF45.

• Mountain Ash

  |

  300 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.