40, Arthur Street, Mountain Ash occupies a 124 m² plot as recorded by HM Land Registry.

Of the 51 other houses in this postcode, 46 have recorded plot sizes, and this one ranks as the 44th largest.

40, Arthur Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 29 Nov 2016.

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

40, Arthur Street, Mountain Ash last changed hands on 30th May 2025, selling for £101,000. The transaction was logged as a leasehold house by HM Land Registry.

In total it has sold 4 times since 1995.

The market for similar properties has risen by 23.2% since May 2025.

• Sold May 2025£101,000
• Sold Apr 2010£40,500
• Sold Apr 2010£28,000

Land Registry records and our Estate Agent network show 145 sales of comparable properties within 710 metres of 40, Arthur Street, Mountain Ash since 2016.

Most recently, 9, Arthur Street, Mountain Ash, CF45 3BL, a freehold house, sold at £125,000 on the 17th October 2025.

Read more about house prices in CF45.

• Sold Oct 2025£125,000 | 3 Bed House9, Arthur Street, Mountain Ash, CF45 3BL9, Arthur Street, Mountain Ash, CF45 3BL
• Sold Jul 2025£95,000 | 3 Bed House38, Albert Street, Mountain Ash, CF45 3BA38, Albert Street, Mountain Ash, CF45 3BA
• Sold Jun 2025£66,000 | 3 Bed House40B, Glyngwyn Street, Mountain Ash, CF45 3AF40B, Glyngwyn Street, Mountain Ash, CF45 3AF
• Sold May 2025£103,000 | 3 Bed House15, Albany Street, Mountain Ash, CF45 3BE15, Albany Street, Mountain Ash, CF45 3BE
• Sold Apr 2025£72,000 | 3 Bed House16, Albert Street, Mountain Ash, CF45 3BA16, Albert Street, Mountain Ash, CF45 3BA
• Sold Nov 2024£85,000 | 3 Bed House3, Mount Pleasant Terrace, Mountain Ash, CF45 3AN3, Mount Pleasant Terrace, Mountain Ash, CF45 3AN
• Sold Sep 2024£81,000 | 3 Bed House34, Glyngwyn Street, Mountain Ash, CF45 3AF34, Glyngwyn Street, Mountain Ash, CF45 3AF
• Sold Jul 2024£75,000 | 3 Bed House12, Hughes Street, Mountain Ash, CF45 3UG12, Hughes Street, Mountain Ash, CF45 3UG
• Sold Jul 2024£105,000 | 3 Bed House14, Clarence Street, Mountain Ash, CF45 3BB14, Clarence Street, Mountain Ash, CF45 3BB
• Sold Jul 2024£108,000 | 3 Bed House41, Arthur Street, Mountain Ash, CF45 3BL41, Arthur Street, Mountain Ash, CF45 3BL
• Sold Jun 2024£80,000 | 3 Bed House20, Windsor Road, Mountain Ash, CF45 3BH20, Windsor Road, Mountain Ash, CF45 3BH
• Sold May 2024£62,000 | 3 Bed House89, Victoria Street, Mountain Ash, CF45 3AP89, Victoria Street, Mountain Ash, CF45 3AP
• Sold Sep 2023£85,000 | 3 Bed House58, Victoria Street, Mountain Ash, CF45 3AP58, Victoria Street, Mountain Ash, CF45 3AP
• Sold Apr 2023£86,000 | 3 Bed House44, Arthur Street, Mountain Ash, CF45 3BL44, Arthur Street, Mountain Ash, CF45 3BL
• Sold May 2022£100,000 | 3 Bed House47, Mount Pleasant Terrace, Mountain Ash, CF45 3AN47, Mount Pleasant Terrace, Mountain Ash, CF45 3AN
• Sold Sep 2019£39,000 | 3 Bed House34, Arthur Street, Mountain Ash, CF45 3BL34, Arthur Street, Mountain Ash, CF45 3BL
• Sold Mar 2019£50,000 | 3 Bed House11, Arthur Street, Mountain Ash, CF45 3BL11, Arthur Street, Mountain Ash, CF45 3BL
• Sold Jan 2018£43,000 | 3 Bed House39, Arthur Street, Mountain Ash, CF45 3BL39, Arthur Street, Mountain Ash, CF45 3BL
• Sold Jul 2017£39,500 | 3 Bed House38, Arthur Street, Mountain Ash, CF45 3BL38, Arthur Street, Mountain Ash, CF45 3BL
• Sold Nov 2016£43,000 | 3 Bed House29, Arthur Street, Mountain Ash, CF45 3BL29, Arthur Street, Mountain Ash, CF45 3BL

Our analysis of the public data ranks 40, Arthur Street, Mountain Ash as the 33rd largest and the 33rd most expensive of the 51 addresses on Arthur Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £58k less expensive than the typical property.

• Mountain Ash

  |

  1.0 km away
• Penrhiwceiber

  |

  1.1 km away
• Fernhill

  |

  2.1 km away

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