39, Napier Street, Mountain Ash occupies a 114 m² plot as recorded by HM Land Registry.

Of the 50 other houses in this postcode, 43 have recorded plot sizes, and this one ranks as the 3rd largest.

39, Napier Street, Mountain Ash has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 20 Jul 2011.

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

39, Napier Street, Mountain Ash last changed hands on 14th July 2015, selling for £60,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has risen by 90.9% since July 2015.

• Sold Jul 2015£60,000
• Sold Aug 2011£39,500
• Sold Mar 2003£46,000

Land Registry records and our Estate Agent network show 213 sales of comparable properties within 510 metres of 39, Napier Street, Mountain Ash since 2017.

Most recently, 16, Commercial Street, Mountain Ash, CF45 3PS, a freehold house, sold at £122,000 on the 29th May 2026.

Read more about house prices in CF45.

• Sold May 2026£122,000 | 3 Bed House16, Commercial Street, Mountain Ash, CF45 3PS16, Commercial Street, Mountain Ash, CF45 3PS
• Sold May 2026£115,000 | 3 Bed House33, Dover Street, Mountain Ash, CF45 3HU33, Dover Street, Mountain Ash, CF45 3HU
• Sold Dec 2025£112,500 | 3 Bed House24, Pryce Street, Mountain Ash, CF45 3NT24, Pryce Street, Mountain Ash, CF45 3NT
• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Jul 2025£49,000 | 3 Bed House49, Commercial Street, Mountain Ash, CF45 3PS49, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jun 2025£132,500 | 3 Bed House28, Kingcraft Street, Mountain Ash, CF45 3LT28, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Apr 2025£129,950 | 3 Bed House38, Kingcraft Street, Mountain Ash, CF45 3LT38, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Mar 2025£76,000 | 3 Bed House1, Glyngwyn Street, Mountain Ash, CF45 3AF1, Glyngwyn Street, Mountain Ash, CF45 3AF
• Sold Feb 2025£122,000 | 3 Bed House21, Darran Road, Mountain Ash, CF45 3HT21, Darran Road, Mountain Ash, CF45 3HT
• Sold Jan 2025£81,500 | 3 Bed House2, Cliff Street, Mountain Ash, CF45 3LE2, Cliff Street, Mountain Ash, CF45 3LE
• Sold Dec 2024£85,000 | 3 Bed House55, Napier Street, Mountain Ash, CF45 3HW55, Napier Street, Mountain Ash, CF45 3HW
• Sold Nov 2024£120,000 | 3 Bed House3, Aberpennar Street, Mountain Ash, CF45 3LS3, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Oct 2024£55,000 | 3 Bed House39, Dover Street, Mountain Ash, CF45 3HU39, Dover Street, Mountain Ash, CF45 3HU
• Sold Oct 2023£88,500 | 3 Bed House54, Napier Street, Mountain Ash, CF45 3HW54, Napier Street, Mountain Ash, CF45 3HW
• Sold Jul 2022£87,500 | 3 Bed House35, Napier Street, Mountain Ash, CF45 3HW35, Napier Street, Mountain Ash, CF45 3HW
• Sold Feb 2021£68,000 | 3 Bed House58, Duffryn Street, Mountain Ash, CF45 3HR58, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Jan 2021£42,000 | 3 Bed House12, Oxford Street, Mountain Ash, CF45 3PL12, Oxford Street, Mountain Ash, CF45 3PL
• Sold Oct 2017£70,000 | 3 Bed House2, Napier Street, Mountain Ash, CF45 3HW2, Napier Street, Mountain Ash, CF45 3HW
• Sold Sep 2017£37,000 | 3 Bed House33, Napier Street, Mountain Ash, CF45 3HW33, Napier Street, Mountain Ash, CF45 3HW
• Sold Aug 2017£48,000 | 3 Bed House28, Dover Street, Mountain Ash, CF45 3HU28, Dover Street, Mountain Ash, CF45 3HU

Our analysis of the public data ranks 39, Napier Street, Mountain Ash as the largest and the most expensive of the 50 addresses on Napier Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £41k less expensive than the typical property.

• Mountain Ash

  |

  200 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

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