18, Nash Street, Mountain Ash occupies a 97 m² plot as recorded by HM Land Registry.

Of the 19 other houses in this postcode, 13 have recorded plot sizes, and this one ranks as the 14th largest.

18, Nash Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 23 Mar 2018.

The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.

18, Nash Street, Mountain Ash last changed hands on 16th December 2009, selling for £55,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has risen by 82.8% since December 2009.

• Sold Dec 2009£55,000

Land Registry records and our Estate Agent network show 93 sales of comparable properties within 1.4 kilometres of 18, Nash Street, Mountain Ash across the last 2 years.

Most recently, 37, Park Street, Mountain Ash, CF45 4PF, a freehold house, sold at £90,000 on the 25th February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£90,000 | 3 Bed House37, Park Street, Mountain Ash, CF45 4PF37, Park Street, Mountain Ash, CF45 4PF
• Sold Jul 2025£130,000 | 3 Bed House25, Park Street, Mountain Ash, CF45 4PF25, Park Street, Mountain Ash, CF45 4PF
• Sold May 2025£105,000 | 3 Bed House32, Park Street, Mountain Ash, CF45 4PF32, Park Street, Mountain Ash, CF45 4PF

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Our analysis of the public data ranks 18, Nash Street, Mountain Ash as the 16th largest and the 16th most expensive of the 20 addresses on Nash Street, Abercynon, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £49k less expensive than the typical property.

• Abercynon

  |

  400 m away
• Quakers Yard

  |

  2.0 km away
• Penrhiwceiber

  |

  3.5 km away

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