8, Thomas Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 27 Feb 2021.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 8, Thomas Street, Mountain Ash completed on 7th May 2021 at £87,000 and was recorded by HM Land Registry as a leasehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 56.4% over the period since May 2021.

• Sold May 2021£87,000
• Sold Feb 2004£29,950

Since 2017 122 properties similar to 8, Thomas Street, Mountain Ash have sold within a radius of 600 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 12th January 2026, was 38, Harcourt Terrace, Mountain Ash, CF45 3SD, a freehold house which sold for £97,000.

Read more about house prices in CF45.

• Sold Jan 2026£97,000 | 3 Bed House38, Harcourt Terrace, Mountain Ash, CF45 3SD38, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Oct 2025£125,000 | 3 Bed House9, Arthur Street, Mountain Ash, CF45 3BL9, Arthur Street, Mountain Ash, CF45 3BL
• Sold Jul 2025£95,000 | 3 Bed House38, Albert Street, Mountain Ash, CF45 3BA38, Albert Street, Mountain Ash, CF45 3BA
• Sold May 2025£135,000 | 3 Bed House44, Ty'R Felin Street, Mountain Ash, CF45 3YR44, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold May 2025£103,000 | 3 Bed House15, Albany Street, Mountain Ash, CF45 3BE15, Albany Street, Mountain Ash, CF45 3BE
• Sold Apr 2025£72,000 | 3 Bed House16, Albert Street, Mountain Ash, CF45 3BA16, Albert Street, Mountain Ash, CF45 3BA
• Sold Feb 2025£92,750 | 3 Bed House19, Harcourt Terrace, Mountain Ash, CF45 3SD19, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Dec 2024£130,000 | 3 Bed House30, Cilhaul Terrace, Mountain Ash, CF45 3ND30, Cilhaul Terrace, Mountain Ash, CF45 3ND
• Sold Jul 2024£75,000 | 3 Bed House12, Hughes Street, Mountain Ash, CF45 3UG12, Hughes Street, Mountain Ash, CF45 3UG
• Sold Jul 2024£105,000 | 3 Bed House14, Clarence Street, Mountain Ash, CF45 3BB14, Clarence Street, Mountain Ash, CF45 3BB
• Sold May 2023£96,950 | 3 Bed House22, Oakland Street, Mountain Ash, CF45 3AL22, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2022£105,000 | 3 Bed House3, Hughes Street, Mountain Ash, CF45 3UG3, Hughes Street, Mountain Ash, CF45 3UG
• Sold Jul 2022£93,000 | 3 Bed House18, Oakland Street, Mountain Ash, CF45 3AL18, Oakland Street, Mountain Ash, CF45 3AL
• Sold Feb 2022£95,000 | 3 Bed House28, Thomas Street, Mountain Ash, CF45 3BU28, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jul 2021£114,000 | 3 Bed House9, Consort Street, Mountain Ash, CF45 3AY9, Consort Street, Mountain Ash, CF45 3AY
• Sold Jun 2021£70,000 | 3 Bed House2, Consort Street, Mountain Ash, CF45 3AY2, Consort Street, Mountain Ash, CF45 3AY
• Sold Apr 2021£77,000 | 3 Bed House27, Glancynon Street, Mountain Ash, CF45 3YU27, Glancynon Street, Mountain Ash, CF45 3YU
• Sold Dec 2019£96,000 | 3 Bed House16, Thomas Street, Mountain Ash, CF45 3BU16, Thomas Street, Mountain Ash, CF45 3BU
• Sold Oct 2018£45,000 | 3 Bed House35, Oakland Street, Mountain Ash, CF45 3AL35, Oakland Street, Mountain Ash, CF45 3AL
• Sold Mar 2017£60,000 | 3 Bed House26, Oakland Street, Mountain Ash, CF45 3AL26, Oakland Street, Mountain Ash, CF45 3AL

Of the 73 addresses on Thomas Street, Mountain Ash, CF45, 8, Thomas Street, Mountain Ash comes out as the 63rd largest and the 59th most expensive in our analysis of the public data.

It is also £37k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  800 m away
• Penrhiwceiber

  |

  1.0 km away
• Fernhill

  |

  2.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.