18, Llanwonno Road, Mountain Ash occupies a 267 m² plot as recorded by HM Land Registry.

Of the 58 other houses in this postcode, 49 have recorded plot sizes, and this one ranks as the 11th largest.

18, Llanwonno Road, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 06 Apr 2010.

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

18, Llanwonno Road, Mountain Ash last changed hands on 14th January 2011, selling for £71,575. 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 91.6% since January 2011.

• Sold Jan 2011£71,575

Land Registry records and our Estate Agent network show 243 sales of comparable properties within 600 metres of 18, Llanwonno Road, Mountain Ash since 2021.

Most recently, 43, Cilhaul Terrace, Mountain Ash, CF45 3ND, a freehold house, sold at £157,000 on the 13th February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£157,000 | 3 Bed House43, Cilhaul Terrace, Mountain Ash, CF45 3ND43, Cilhaul Terrace, Mountain Ash, CF45 3ND
• Sold Jan 2026£125,000 | 3 Bed House67, Brynifor, Mountain Ash, CF45 3AB67, Brynifor, Mountain Ash, CF45 3AB
• Sold Nov 2025£105,000 | 3 Bed House38, Llanwonno Road, Mountain Ash, CF45 3NB38, Llanwonno Road, Mountain Ash, CF45 3NB
• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Apr 2025£129,950 | 3 Bed House38, Kingcraft Street, Mountain Ash, CF45 3LT38, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Mar 2025£118,000 | 3 Bed House39, Brynifor, Mountain Ash, CF45 3AB39, Brynifor, Mountain Ash, CF45 3AB
• Sold Mar 2025£118,000 | 3 Bed House47, Brynifor, Mountain Ash, CF45 3AB47, Brynifor, Mountain Ash, CF45 3AB
• Sold Oct 2024£55,000 | 3 Bed House39, Dover Street, Mountain Ash, CF45 3HU39, Dover Street, Mountain Ash, CF45 3HU
• Sold Jul 2024£126,000 | 3 Bed House45, Bailey Street, Mountain Ash, CF45 3AS45, Bailey Street, Mountain Ash, CF45 3AS
• Sold Jun 2024£108,000 | 3 Bed House77, Brynifor, Mountain Ash, CF45 3AB77, Brynifor, Mountain Ash, CF45 3AB
• Sold May 2024£95,000 | 3 Bed House48, Brynifor, Mountain Ash, CF45 3AB48, Brynifor, Mountain Ash, CF45 3AB
• Sold Sep 2023£123,500 | 3 Bed House62, Brynifor, Mountain Ash, CF45 3AB62, Brynifor, Mountain Ash, CF45 3AB
• Sold May 2023£100,000 | 3 Bed House43, Brynifor, Mountain Ash, CF45 3AB43, Brynifor, Mountain Ash, CF45 3AB
• Sold May 2022£148,000 | 3 Bed House19, Llanwonno Road, Mountain Ash, CF45 3NB19, Llanwonno Road, Mountain Ash, CF45 3NB
• Sold Feb 2022£85,000 | 3 Bed House63, Brynifor, Mountain Ash, CF45 3AB63, Brynifor, Mountain Ash, CF45 3AB
• Sold Nov 2021£100,000 | 3 Bed House50, Bailey Street, Mountain Ash, CF45 3AS50, Bailey Street, Mountain Ash, CF45 3AS
• Sold Jul 2021£100,000 | 3 Bed House52, Bailey Street, Mountain Ash, CF45 3AS52, Bailey Street, Mountain Ash, CF45 3AS
• Sold May 2021£95,000 | 3 Bed House22, Coplestone Street, Mountain Ash, CF45 3LY22, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2021£77,000 | 3 Bed House32, Coplestone Street, Mountain Ash, CF45 3LY32, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Mar 2021£95,000 | 3 Bed House33, Gwernifor Street, Mountain Ash, CF45 3NA33, Gwernifor Street, Mountain Ash, CF45 3NA

Our analysis of the public data ranks 18, Llanwonno Road, Mountain Ash as the 69th largest and the 71st most expensive of the 78 addresses on Llanwonno Road, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £32k less expensive than the typical property.

• Mountain Ash

  |

  500 m away
• Fernhill

  |

  1.5 km away
• Penrhiwceiber

  |

  1.6 km away

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