According to data from HM Land Registry, 41, Seymour Street, Mountain Ash sits on a plot of 102 m².

We have plot size data on 42 out of 44 other houses in the postcode and 41, Seymour Street, Mountain Ash sits on the 41st largest plot.

41, Seymour Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Jun 2021.

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, 41, Seymour Street, Mountain Ash was last sold on 22nd November 2022 for £140,000 and was recorded as a freehold house.

The property has had 4 sales since 1995.

Since November 2022, the market for similar properties has risen by 11.7%.

• Sold Nov 2022£140,000
• Sold Apr 2004£41,500
• Sold Oct 2001£13,500

According to the Land Registry and our network of Estate Agents, there have been 241 sales of properties similar to 41, Seymour Street, Mountain Ash within a radius of 630 metres since 2020.

The most recent example is 50, Phillip Street, Mountain Ash, CF45 4BG, a freehold house which sold for £125,000 on the 4th July 2025.

Read more about house prices in CF45.

• Sold Jul 2025£125,000 | 3 Bed House50, Phillip Street, Mountain Ash, CF45 4BG50, Phillip Street, Mountain Ash, CF45 4BG
• Sold Apr 2025£82,600 | 3 Bed House54, Arnold Street, Mountain Ash, CF45 4LF54, Arnold Street, Mountain Ash, CF45 4LF
• Sold Oct 2024£80,000 | 3 Bed House18, Phillip Street, Mountain Ash, CF45 4BE18, Phillip Street, Mountain Ash, CF45 4BE
• Sold Jul 2024£140,000 | 3 Bed House26, Phillip Street, Mountain Ash, CF45 4BE26, Phillip Street, Mountain Ash, CF45 4BE
• Sold May 2024£138,500 | 3 Bed House42, Phillip Street, Mountain Ash, CF45 4BG42, Phillip Street, Mountain Ash, CF45 4BG
• Sold Jan 2024£105,000 | 3 Bed House12, Phillip Street, Mountain Ash, CF45 4BE12, Phillip Street, Mountain Ash, CF45 4BE
• Sold Jun 2023£117,500 | 3 Bed House21, Copley Street, Mountain Ash, CF45 4AS21, Copley Street, Mountain Ash, CF45 4AS
• Sold Apr 2023£116,000 | 3 Bed House33, Arnold Street, Mountain Ash, CF45 4LF33, Arnold Street, Mountain Ash, CF45 4LF
• Sold Aug 2022£135,000 | 3 Bed House15, Arnold Street, Mountain Ash, CF45 4LF15, Arnold Street, Mountain Ash, CF45 4LF
• Sold Jul 2022£135,000 | 3 Bed House17, Allen Street, Mountain Ash, CF45 4BD17, Allen Street, Mountain Ash, CF45 4BD
• Sold Mar 2022£115,000 | 3 Bed House56, Phillip Street, Mountain Ash, CF45 4BG56, Phillip Street, Mountain Ash, CF45 4BG
• Sold Mar 2022£68,000 | 3 Bed House75, Phillip Street, Mountain Ash, CF45 4BG75, Phillip Street, Mountain Ash, CF45 4BG
• Sold Oct 2021£99,000 | 3 Bed House41, Phillip Street, Mountain Ash, CF45 4BG41, Phillip Street, Mountain Ash, CF45 4BG
• Sold Sep 2021£107,500 | 3 Bed House37, Arnold Street, Mountain Ash, CF45 4LF37, Arnold Street, Mountain Ash, CF45 4LF
• Sold Jun 2021£80,000 | 3 Bed House24, Arnold Street, Mountain Ash, CF45 4LF24, Arnold Street, Mountain Ash, CF45 4LF
• Sold Mar 2021£65,000 | 3 Bed House23, Phillip Street, Mountain Ash, CF45 4BE23, Phillip Street, Mountain Ash, CF45 4BE
• Sold Nov 2020£55,000 | 3 Bed House72, Phillip Street, Mountain Ash, CF45 4BG72, Phillip Street, Mountain Ash, CF45 4BG
• Sold Sep 2020£55,000 | 3 Bed House32, Arnold Street, Mountain Ash, CF45 4LF32, Arnold Street, Mountain Ash, CF45 4LF
• Sold Aug 2020£67,000 | 3 Bed House26, Arnold Street, Mountain Ash, CF45 4LF26, Arnold Street, Mountain Ash, CF45 4LF
• Sold Aug 2020£72,000 | 3 Bed House58, Phillip Street, Mountain Ash, CF45 4BG58, Phillip Street, Mountain Ash, CF45 4BG

Seymour Street, Mountain Ash, CF45 has a total of 44 addresses. According to our analysis of all the public data, 41, Seymour Street, Mountain Ash is the 23rd largest and the 23rd most expensive property on the street.

When compared to the postcode district it is £34k less expensive than the average property in CF45.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.3 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.