20, Glanlay Street, Mountain Ash occupies a 98 m² plot as recorded by HM Land Registry.

Of the 49 other houses in this postcode, 44 have recorded plot sizes, and this one ranks as the 39th largest.

20, Glanlay Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Aug 2020.

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

20, Glanlay Street, Mountain Ash last changed hands on 26th February 2021, selling for £77,500. 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 72.6% since February 2021.

• Sold Feb 2021£77,500
• Sold Mar 2004£18,000

Land Registry records and our Estate Agent network show 238 sales of comparable properties within 1.0 kilometres of 20, Glanlay Street, Mountain Ash since 2017.

Most recently, 32, Rheola Street, Mountain Ash, CF45 3TB, a freehold house, sold at £150,000 on the 27th March 2026.

Read more about house prices in CF45.

• Sold Mar 2026£150,000 | 3 Bed House32, Rheola Street, Mountain Ash, CF45 3TB32, Rheola Street, Mountain Ash, CF45 3TB
• Sold Mar 2026£127,500 | 3 Bed House3, Glanlay Street, Mountain Ash, CF45 3TL3, Glanlay Street, Mountain Ash, CF45 3TL
• Sold Feb 2026£95,000 | 3 Bed House11, Glanlay Street, Mountain Ash, CF45 3TL11, Glanlay Street, Mountain Ash, CF45 3TL
• Sold Nov 2025£155,000 | 3 Bed House60, Morris Avenue, Mountain Ash, CF45 3TW60, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Oct 2025£115,000 | 3 Bed House30, Glanlay Street, Mountain Ash, CF45 3TL30, Glanlay Street, Mountain Ash, CF45 3TL
• Sold May 2025£69,000 | 3 Bed House11, Morris Avenue, Mountain Ash, CF45 3TW11, Morris Avenue, Mountain Ash, CF45 3TW
• Sold May 2025£98,000 | 3 Bed House1, Morris Avenue, Mountain Ash, CF45 3TW1, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Apr 2025£48,000 | 3 Bed House75, Morris Avenue, Mountain Ash, CF45 3TW75, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Mar 2025£82,500 | 3 Bed House3, Morris Avenue, Mountain Ash, CF45 3TW3, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Feb 2025£150,000 | 3 Bed House39, Glanlay Street, Mountain Ash, CF45 3TL39, Glanlay Street, Mountain Ash, CF45 3TL
• Sold Dec 2024£75,000 | 3 Bed House53, Morris Avenue, Mountain Ash, CF45 3TW53, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Nov 2024£90,000 | 3 Bed House15, Rheola Street, Mountain Ash, CF45 3TA15, Rheola Street, Mountain Ash, CF45 3TA
• Sold Sep 2024£105,000 | 3 Bed House35, Morris Avenue, Mountain Ash, CF45 3TW35, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Mar 2024£57,000 | 3 Bed House12, Rheola Street, Mountain Ash, CF45 3TA12, Rheola Street, Mountain Ash, CF45 3TA
• Sold Nov 2022£99,950 | 3 Bed House11, Rheola Street, Mountain Ash, CF45 3TA11, Rheola Street, Mountain Ash, CF45 3TA
• Sold Jul 2022£60,000 | 3 Bed House54, Morris Avenue, Mountain Ash, CF45 3TW54, Morris Avenue, Mountain Ash, CF45 3TW
• Sold May 2022£90,000 | 3 Bed House38, Glanlay Street, Mountain Ash, CF45 3TL38, Glanlay Street, Mountain Ash, CF45 3TL
• Sold Aug 2021£85,000 | 3 Bed House10, Rheola Street, Mountain Ash, CF45 3TA10, Rheola Street, Mountain Ash, CF45 3TA
• Sold Jul 2020£64,000 | 3 Bed House9, Morris Avenue, Mountain Ash, CF45 3TW9, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Nov 2017£50,000 | 3 Bed House15, Glanlay Street, Mountain Ash, CF45 3TL15, Glanlay Street, Mountain Ash, CF45 3TL

Our analysis of the public data ranks 20, Glanlay Street, Mountain Ash as the 27th largest and the 24th most expensive of the 87 addresses on Glanlay Street, Mountain Ash, CF45.

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

• Penrhiwceiber

  |

  300 m away
• Mountain Ash

  |

  1.9 km away
• Merthyr Vale

  |

  2.7 km away

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