18, Commercial Street, Mountain Ash occupies a 201 m² plot as recorded by HM Land Registry.

Of the 14 other houses in this postcode, 12 have recorded plot sizes, and this one ranks as the 2nd largest.

18, Commercial Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 30 Jan 2019.

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

18, Commercial Street, Mountain Ash last changed hands on 18th July 2019, selling for £55,500. 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 88.7% since July 2019.

Land Registry records and our Estate Agent network show 104 sales of comparable properties within 600 metres of 18, Commercial Street, Mountain Ash since 2016.

Most recently, 15, Cliff Street, Mountain Ash, CF45 3LE, a freehold house, sold at £103,000 on the 10th June 2026.

Read more about house prices in CF45.

• Sold Jun 2026£103,000 | 3 Bed House15, Cliff Street, Mountain Ash, CF45 3LE15, Cliff Street, Mountain Ash, CF45 3LE
• Sold Nov 2025£120,000 | 3 Bed House29, Cliff Street, Mountain Ash, CF45 3LE29, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2024£68,000 | 3 Bed House5, Fountain Street, Mountain Ash, CF45 3PA5, Fountain Street, Mountain Ash, CF45 3PA
• Sold Nov 2024£100,000 | 3 Bed House21, Dover Street, Mountain Ash, CF45 3HU21, Dover Street, Mountain Ash, CF45 3HU
• Sold Jul 2024£72,000 | 3 Bed House20, Stream Street, Mountain Ash, CF45 3LL20, Stream Street, Mountain Ash, CF45 3LL
• Sold Apr 2024£81,000 | 3 Bed House28, Duffryn Street, Mountain Ash, CF45 3NU28, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Sep 2023£75,000 | 3 Bed House5, Duffryn Street, Mountain Ash, CF45 3NU5, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Aug 2023£66,000 | 3 Bed House6, Duffryn Street, Mountain Ash, CF45 3NU6, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Apr 2023£108,000 | 3 Bed House13, Stream Street, Mountain Ash, CF45 3LL13, Stream Street, Mountain Ash, CF45 3LL
• Sold Feb 2023£95,000 | 3 Bed House4, Duffryn Street, Mountain Ash, CF45 3NU4, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Aug 2022£72,500 | 3 Bed House30, Duffryn Street, Mountain Ash, CF45 3NU30, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Apr 2022£60,000 | 3 Bed House2, Commercial Street, Mountain Ash, CF45 3PS2, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jun 2021£78,000 | 3 Bed House26, Duffryn Street, Mountain Ash, CF45 3NU26, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2021£83,000 | 3 Bed House16, Duffryn Street, Mountain Ash, CF45 3NU16, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Nov 2019£62,000 | 3 Bed House32, Duffryn Street, Mountain Ash, CF45 3NU32, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Dec 2018£52,000 | 3 Bed House18, Duffryn Street, Mountain Ash, CF45 3NU18, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Sep 2018£36,000 | 3 Bed House21, Duffryn Street, Mountain Ash, CF45 3NU21, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Aug 2016£47,500 | 3 Bed House12, Duffryn Street, Mountain Ash, CF45 3NU12, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Jul 2016£45,000 | 3 Bed House7, Duffryn Street, Mountain Ash, CF45 3NU7, Duffryn Street, Mountain Ash, CF45 3NU

Our analysis of the public data ranks 18, Commercial Street, Mountain Ash as the 20th largest and the 13th most expensive of the 31 addresses on Commercial Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £65k less expensive than the typical property.

• Mountain Ash

  |

  500 m away
• Fernhill

  |

  1.0 km away
• Penrhiwceiber

  |

  2.2 km away

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