6, Thomas Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 05 Jun 2025.

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, 6, Thomas Street, Mountain Ash was last sold on 31st March 2016 for £44,500 and was recorded as a leasehold house.

The property has only had this single sale since 1995.

Since March 2016, the market for similar properties has risen by 108.8%.

• Sold Mar 2016£44,500

According to the Land Registry and our network of Estate Agents, there have been 182 sales of properties similar to 6, Thomas Street, Mountain Ash within a radius of 600 metres since 2019.

The most recent example is 70, Clarence Street, Mountain Ash, CF45 3BD, a freehold house which sold for £135,000 on the 20th March 2026.

Read more about house prices in CF45.

• Sold Mar 2026£135,000 | 3 Bed House70, Clarence Street, Mountain Ash, CF45 3BD70, Clarence Street, Mountain Ash, CF45 3BD
• Sold Feb 2026£145,000 | 3 Bed House12, Thomas Street, Mountain Ash, CF45 3BU12, Thomas Street, Mountain Ash, CF45 3BU
• Sold Oct 2025£112,000 | 3 Bed House32, Oakland Street, Mountain Ash, CF45 3AL32, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2025£130,000 | 3 Bed House14, Oakland Street, Mountain Ash, CF45 3AL14, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2025£125,000 | 3 Bed House26, Albany Street, Mountain Ash, CF45 3BE26, Albany Street, Mountain Ash, CF45 3BE
• Sold Apr 2025£118,000 | 3 Bed House11, Albany Street, Mountain Ash, CF45 3BE11, Albany Street, Mountain Ash, CF45 3BE
• Sold Feb 2025£99,950 | 3 Bed House7, Albany Street, Mountain Ash, CF45 3BE7, Albany Street, Mountain Ash, CF45 3BE
• Sold Jan 2025£95,000 | 3 Bed House47, Albert Street, Mountain Ash, CF45 3BA47, Albert Street, Mountain Ash, CF45 3BA
• Sold Nov 2024£120,000 | 3 Bed House22, Albany Street, Mountain Ash, CF45 3BE22, Albany Street, Mountain Ash, CF45 3BE
• Sold Aug 2024£137,500 | 3 Bed House27, Oakland Street, Mountain Ash, CF45 3AL27, Oakland Street, Mountain Ash, CF45 3AL
• Sold Aug 2024£112,000 | 3 Bed House17, Consort Street, Mountain Ash, CF45 3AY17, Consort Street, Mountain Ash, CF45 3AY
• Sold Sep 2023£92,500 | 3 Bed House5, Albany Street, Mountain Ash, CF45 3BE5, Albany Street, Mountain Ash, CF45 3BE
• Sold May 2022£75,000 | 3 Bed House4, Thomas Street, Mountain Ash, CF45 3BU4, Thomas Street, Mountain Ash, CF45 3BU
• Sold Apr 2022£125,000 | 3 Bed House21, Thomas Street, Mountain Ash, CF45 3BU21, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jan 2022£85,000 | 3 Bed House39, Thomas Street, Mountain Ash, CF45 3BU39, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jan 2022£135,000 | 3 Bed House29, Oakland Street, Mountain Ash, CF45 3AL29, Oakland Street, Mountain Ash, CF45 3AL
• Sold Nov 2021£122,500 | 3 Bed House15, Hughes Street, Mountain Ash, CF45 3UG15, Hughes Street, Mountain Ash, CF45 3UG
• Sold Aug 2020£90,000 | 3 Bed House39, Oakland Street, Mountain Ash, CF45 3AL39, Oakland Street, Mountain Ash, CF45 3AL
• Sold Dec 2019£96,000 | 3 Bed House16, Thomas Street, Mountain Ash, CF45 3BU16, Thomas Street, Mountain Ash, CF45 3BU
• Sold May 2019£55,000 | 3 Bed House36, Thomas Street, Mountain Ash, CF45 3BU36, Thomas Street, Mountain Ash, CF45 3BU

Thomas Street, Mountain Ash, CF45 has a total of 73 addresses. According to our analysis of all the public data, 6, Thomas Street, Mountain Ash is the 35th largest and the 25th most expensive property on the street.

When compared to the postcode district it is £25k less expensive than the average property in CF45.

• Mountain Ash

  |

  800 m away
• Penrhiwceiber

  |

  1.0 km away
• Fernhill

  |

  2.1 km away

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