According to data from HM Land Registry, 40, High Street, Mountain Ash sits on a plot of 87 m².

We have plot size data on 38 out of 47 other houses in the postcode and 40, High Street, Mountain Ash sits on the 22nd largest plot.

40, High Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 23 Jan 2026.

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, 40, High Street, Mountain Ash was last sold on 12th August 2024 for £30,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since August 2024, the market for similar properties has risen by 26.2%.

• Sold Aug 2024£30,000
• Sold Jan 2022£37,500

According to the Land Registry and our network of Estate Agents, there have been 18 sales of properties similar to 40, High Street, Mountain Ash within a radius of 540 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 Oct 2024£67,000 | 3 Bed House20, Chancery Lane, Mountain Ash, CF45 3NW20, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Jun 2024£39,950 | 3 Bed House48, Commercial Street, Mountain Ash, CF45 3PW48, 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£76,250 | 3 Bed House46, Commercial Street, Mountain Ash, CF45 3PW46, Commercial Street, Mountain Ash, CF45 3PW
• Sold Apr 2022£95,955 | 3 Bed House5, Graig Street, Mountain Ash, CF45 3PD5, Graig Street, Mountain Ash, CF45 3PD
• Sold Apr 2021£73,000 | 3 Bed House14, Chancery Lane, Mountain Ash, CF45 3NW14, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Apr 2021£70,000 | 3 Bed House96, High Street, Mountain Ash, CF45 3LN96, High Street, Mountain Ash, CF45 3LN
• Sold Dec 2020£66,000 | 3 Bed House123, High Street, Mountain Ash, CF45 3LN123, High Street, Mountain Ash, CF45 3LN
• 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 Mar 2018£49,500 | 3 Bed House12, Chancery Lane, Mountain Ash, CF45 3NW12, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Mar 2017£38,000 | 3 Bed House121, High Street, Mountain Ash, CF45 3LN121, High Street, Mountain Ash, CF45 3LN
• Sold Feb 2014£32,000 | 3 Bed House85, High Street, Mountain Ash, CF45 3LN85, High Street, Mountain Ash, CF45 3LN
• Sold Sep 2012£52,500 | 3 Bed House1, Ifor Street, Mountain Ash, CF45 3HN1, Ifor Street, Mountain Ash, CF45 3HN
• Sold Sep 2009£40,000 | 3 Bed House106, High Street, Mountain Ash, CF45 3LN106, High Street, Mountain Ash, CF45 3LN
• Sold Mar 2009£38,000 | 3 Bed House30, High Street, Mountain Ash, CF45 3PE30, High Street, Mountain Ash, CF45 3PE
• 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, 40, High Street, Mountain Ash is the 70th largest and the 94th most expensive property on the street.

When compared to the postcode district it is £88k less expensive than the average property in CF45.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.1 km away
• Penrhiwceiber

  |

  2.0 km away

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