17, Glancynon Street, Mountain Ash occupies a 155 m² plot as recorded by HM Land Registry.

Of the 25 other houses in this postcode, 20 have recorded plot sizes, and this one ranks as the 9th largest.

17, Glancynon Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Dec 2015.

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

17, Glancynon Street, Mountain Ash last changed hands on 1st April 2022, selling for £140,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 33.8% since April 2022.

• Sold Apr 2022£140,000
• Sold Sep 2016£85,000

Land Registry records and our Estate Agent network show 264 sales of comparable properties within 620 metres of 17, Glancynon Street, Mountain Ash since 2020.

Most recently, 12, Thomas Street, Mountain Ash, CF45 3BU, a freehold house, sold at £145,000 on the 20th February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£145,000 | 3 Bed House12, Thomas Street, Mountain Ash, CF45 3BU12, Thomas Street, Mountain Ash, CF45 3BU
• Sold Nov 2025£122,000 | 3 Bed House13, Hughes Street, Mountain Ash, CF45 3UG13, Hughes Street, Mountain Ash, CF45 3UG
• Sold Oct 2025£112,000 | 3 Bed House32, Oakland Street, Mountain Ash, CF45 3AL32, Oakland Street, Mountain Ash, CF45 3AL
• Sold Oct 2025£125,000 | 3 Bed House9, Arthur Street, Mountain Ash, CF45 3BL9, Arthur Street, Mountain Ash, CF45 3BL
• Sold Sep 2025£116,500 | 3 Bed House20, Ty'R Felin Street, Mountain Ash, CF45 3YR20, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold Sep 2025£125,000 | 3 Bed House26, Albany Street, Mountain Ash, CF45 3BE26, Albany Street, Mountain Ash, CF45 3BE
• Sold May 2025£135,000 | 3 Bed House44, Ty'R Felin Street, Mountain Ash, CF45 3YR44, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold Apr 2025£118,000 | 3 Bed House11, Albany Street, Mountain Ash, CF45 3BE11, Albany Street, Mountain Ash, CF45 3BE
• Sold Feb 2025£99,950 | 3 Bed House7, Albany Street, Mountain Ash, CF45 3BE7, Albany Street, Mountain Ash, CF45 3BE
• Sold Dec 2024£103,000 | 3 Bed House21, Glancynon Street, Mountain Ash, CF45 3YU21, Glancynon Street, Mountain Ash, CF45 3YU
• Sold Nov 2024£120,000 | 3 Bed House22, Albany Street, Mountain Ash, CF45 3BE22, Albany Street, Mountain Ash, CF45 3BE
• Sold Aug 2024£137,500 | 3 Bed House27, Oakland Street, Mountain Ash, CF45 3AL27, Oakland Street, Mountain Ash, CF45 3AL
• Sold Jul 2024£75,000 | 3 Bed House12, Hughes Street, Mountain Ash, CF45 3UG12, Hughes Street, Mountain Ash, CF45 3UG
• Sold Sep 2023£92,500 | 3 Bed House5, Albany Street, Mountain Ash, CF45 3BE5, Albany Street, Mountain Ash, CF45 3BE
• Sold Jun 2023£68,000 | 3 Bed House8, Albany Street, Mountain Ash, CF45 3BE8, Albany Street, Mountain Ash, CF45 3BE
• Sold May 2022£75,000 | 3 Bed House4, Thomas Street, Mountain Ash, CF45 3BU4, Thomas Street, Mountain Ash, CF45 3BU
• Sold Apr 2022£125,000 | 3 Bed House21, Thomas Street, Mountain Ash, CF45 3BU21, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jan 2022£135,000 | 3 Bed House29, Oakland Street, Mountain Ash, CF45 3AL29, Oakland Street, Mountain Ash, CF45 3AL
• Sold Nov 2021£122,500 | 3 Bed House15, Hughes Street, Mountain Ash, CF45 3UG15, Hughes Street, Mountain Ash, CF45 3UG
• Sold Aug 2020£90,000 | 3 Bed House39, Oakland Street, Mountain Ash, CF45 3AL39, Oakland Street, Mountain Ash, CF45 3AL

Our analysis of the public data ranks 17, Glancynon Street, Mountain Ash as the 21st largest and the 21st most expensive of the 28 addresses on Glancynon Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £37k less expensive than the typical property.

• Mountain Ash

  |

  900 m away
• Penrhiwceiber

  |

  900 m away
• Fernhill

  |

  2.2 km away

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