20, Railway Terrace, Mountain Ash occupies a 138 m² plot as recorded by HM Land Registry.

Of the 31 other houses in this postcode, 22 have recorded plot sizes, and this one ranks as the 6th largest.

20, Railway Terrace, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Apr 2025.

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

20, Railway Terrace, Mountain Ash last changed hands on 3rd July 1998, selling for £22,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

• Sold Jul 1998£22,000

Land Registry records and our Estate Agent network show 88 sales of comparable properties within 1.0 kilometres of 20, Railway Terrace, Mountain Ash since 2012.

Most recently, 34, Penrhiwceiber Road, Mountain Ash, CF45 3SP, a freehold house, sold at £108,000 on the 7th May 2026.

Read more about house prices in CF45.

• Sold May 2026£108,000 | 3 Bed House34, Penrhiwceiber Road, Mountain Ash, CF45 3SP34, Penrhiwceiber Road, Mountain Ash, CF45 3SP
• Sold Nov 2025£120,000 | 3 Bed House100, Woodfield Terrace, Mountain Ash, CF45 3UT100, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Nov 2025£108,000 | 3 Bed House111, Woodfield Terrace, Mountain Ash, CF45 3UT111, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Jun 2025£132,500 | 3 Bed House61, Harcourt Terrace, Mountain Ash, CF45 3SD61, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Mar 2025£144,000 | 4 Bed House17, Penrhiwceiber Road, Mountain Ash, CF45 3SP17, Penrhiwceiber Road, Mountain Ash, CF45 3SP
• Sold Feb 2024£105,000 | 3 Bed House67, Morris Avenue, Mountain Ash, CF45 3TW67, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Jan 2024£125,000 | 3 Bed House65, Penrhiwceiber Road, Mountain Ash, CF45 3SN65, Penrhiwceiber Road, Mountain Ash, CF45 3SN
• Sold May 2023£130,000 | 4 Bed House14, Glasbrook Terrace, Mountain Ash, CF45 3SY14, Glasbrook Terrace, Mountain Ash, CF45 3SY
• Sold Oct 2022£80,000 | 4 Bed House52, Church Street, Mountain Ash, CF45 3YB52, Church Street, Mountain Ash, CF45 3YB
• Sold Oct 2022£98,000 | 3 Bed House49, Penrhiwceiber Road, Mountain Ash, CF45 3SN49, Penrhiwceiber Road, Mountain Ash, CF45 3SN
• Sold Dec 2021£120,000 | 3 Bed House1, Cynon Terrace, Mountain Ash, CF45 3SU1, Cynon Terrace, Mountain Ash, CF45 3SU
• Sold Nov 2021£97,000 | 3 Bed House37, Rheola Street, Mountain Ash, CF45 3TB37, Rheola Street, Mountain Ash, CF45 3TB
• Sold Jul 2021£65,000 | 4 Bed House25, Railway Terrace, Mountain Ash, CF45 3ST25, Railway Terrace, Mountain Ash, CF45 3ST
• Sold Jun 2021£50,000 | 4 Bed House33, Penrhiwceiber Road, Mountain Ash, CF45 3SP33, Penrhiwceiber Road, Mountain Ash, CF45 3SP
• Sold Jul 2020£55,000 | 3 Bed House8, Penrhiwceiber Road, Mountain Ash, CF45 3SP8, Penrhiwceiber Road, Mountain Ash, CF45 3SP
• Sold Jun 2018£66,500 | 3 Bed House48, Rheola Street, Mountain Ash, CF45 3TB48, Rheola Street, Mountain Ash, CF45 3TB
• Sold Nov 2017£87,000 | 3 Bed House10, Station Terrace, Mountain Ash, CF45 3SS10, Station Terrace, Mountain Ash, CF45 3SS
• Sold Aug 2016£79,950 | 3 Bed House44, Rheola Street, Mountain Ash, CF45 3TB44, Rheola Street, Mountain Ash, CF45 3TB
• Sold Jan 2015£40,000 | 3 Bed House33, Rheola Street, Mountain Ash, CF45 3TB33, Rheola Street, Mountain Ash, CF45 3TB
• Sold Nov 2012£52,000 | 3 Bed House46, Glanlay Street, Mountain Ash, CF45 3TL46, Glanlay Street, Mountain Ash, CF45 3TL

Our analysis of the public data ranks 20, Railway Terrace, Mountain Ash as the 11th largest and the 12th most expensive of the 31 addresses on Railway Terrace, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £30k less expensive than the typical property.

• Penrhiwceiber

  |

  100 m away
• Mountain Ash

  |

  1.8 km away
• Merthyr Vale

  |

  2.6 km away

Environment Agency data suggests this area has a Very Low risk of flooding.