According to data from HM Land Registry, 3, Thomas Street, Mountain Ash sits on a plot of 152 m².

We have plot size data on 24 out of 41 other houses in the postcode and 3, Thomas Street, Mountain Ash sits on the 9th largest plot.

3, Thomas Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 09 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).

According to the Land Registry and our network of Estate Agents, there have been 27 sales of properties similar to 3, Thomas Street, Mountain Ash within a radius of 610 metres since 2010.

The most recent example is 3, Glancynon Street, Mountain Ash, CF45 3YU, a leasehold house which sold for £135,000 on the 10th June 2025.

Read more about house prices in CF45.

• Sold Jun 2025£135,000 | 3 Bed House3, Glancynon Street, Mountain Ash, CF45 3YU3, Glancynon Street, Mountain Ash, CF45 3YU
• Sold Nov 2024£140,000 | 4 Bed House20, Harcourt Terrace, Mountain Ash, CF45 3SD20, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Jun 2024£47,000 | 3 Bed House40, Thomas Street, Mountain Ash, CF45 3BU40, Thomas Street, Mountain Ash, CF45 3BU
• Sold Dec 2023£18,000 | 4 Bed House1A, Thomas Street, Mountain Ash, CF45 3BU1A, Thomas Street, Mountain Ash, CF45 3BU
• Sold Dec 2023£77,000 | 3 Bed House54, Cilhaul Terrace, Mountain Ash, CF45 3ND54, Cilhaul Terrace, Mountain Ash, CF45 3ND
• Sold Oct 2023£125,000 | 3 Bed House60, Llanwonno Road, Mountain Ash, CF45 3NB60, Llanwonno Road, Mountain Ash, CF45 3NB
• Sold Aug 2022£149,950 | 4 Bed House37, Thomas Street, Mountain Ash, CF45 3BU37, Thomas Street, Mountain Ash, CF45 3BU
• Sold Dec 2021£140,000 | 4 Bed House2, Albert Street, Mountain Ash, CF45 3BA2, Albert Street, Mountain Ash, CF45 3BA
• Sold Sep 2021£140,000 | 4 Bed House1, Thomas Street, Mountain Ash, CF45 3BU1, Thomas Street, Mountain Ash, CF45 3BU
• Sold Oct 2020£85,000 | 4 Bed House53, Cilhaul Terrace, Mountain Ash, CF45 3ND53, Cilhaul Terrace, Mountain Ash, CF45 3ND
• Sold Jul 2020£145,000 | 4 Bed House55, Llanwonno Road, Mountain Ash, CF45 3NB55, Llanwonno Road, Mountain Ash, CF45 3NB
• Sold Jul 2019£92,500 | 4 Bed House71, Penrhiwceiber Road, Mountain Ash, CF45 3SF71, Penrhiwceiber Road, Mountain Ash, CF45 3SF
• Sold Jun 2019£90,000 | 4 Bed House15, King Street, Mountain Ash, CF45 3BW15, King Street, Mountain Ash, CF45 3BW
• Sold May 2019£90,000 | 4 Bed House2, Hughes Street, Mountain Ash, CF45 3UG2, Hughes Street, Mountain Ash, CF45 3UG
• Sold Jan 2017£96,500 | 4 Bed House24, Albany Street, Mountain Ash, CF45 3BE24, Albany Street, Mountain Ash, CF45 3BE
• Sold Oct 2016£81,500 | 4 Bed House12, Oakland Street, Mountain Ash, CF45 3AL12, Oakland Street, Mountain Ash, CF45 3AL
• Sold Aug 2016£69,500 | 3 Bed House19, Edward Street, Mountain Ash, CF45 3AJ19, Edward Street, Mountain Ash, CF45 3AJ
• Sold Aug 2013£67,950 | 4 Bed House22, Thomas Street, Mountain Ash, CF45 3BU22, Thomas Street, Mountain Ash, CF45 3BU
• Sold May 2012£31,500 | 4 Bed House14, Consort Street, Mountain Ash, CF45 3AY14, Consort Street, Mountain Ash, CF45 3AY
• Sold Jun 2010£55,000 | 4 Bed HouseBronheulog Villa, Woodfield Terrace, Mountain Ash, CF45 3UTBronheulog Villa, Woodfield Terrace, Mountain Ash, CF45 3UT

Thomas Street, Mountain Ash, CF45 has a total of 73 addresses. According to our analysis of all the public data, 3, Thomas Street, Mountain Ash is the 6th largest and the 7th most expensive property on the street.

When compared to the postcode district it is £1k more 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.