3, Glanlay Street, Mountain Ash occupies a 110 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 5th largest.

3, Glanlay Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 19 Dec 2025.

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

3, Glanlay Street, Mountain Ash last changed hands on 20th March 2026, selling for £127,500. 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 26.7% since March 2026.

• Sold Mar 2026£127,500
• Sold Jan 2012£36,500

Land Registry records and our Estate Agent network show 161 sales of comparable properties within 1.0 kilometres of 3, Glanlay Street, Mountain Ash since 2016.

Most recently, 60, Morris Avenue, Mountain Ash, CF45 3TW, a freehold house, sold at £155,000 on the 7th November 2025.

Read more about house prices in CF45.

• 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£98,000 | 3 Bed House1, Morris Avenue, Mountain Ash, CF45 3TW1, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Apr 2025£123,000 | 3 Bed House21, Glamorgan Street, Mountain Ash, CF45 3HX21, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Apr 2025£48,000 | 3 Bed House75, Morris Avenue, Mountain Ash, CF45 3TW75, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Mar 2025£90,000 | 3 Bed House59, Morris Avenue, Mountain Ash, CF45 3TW59, 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 Sep 2024£105,000 | 3 Bed House35, Morris Avenue, Mountain Ash, CF45 3TW35, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Sep 2024£99,000 | 3 Bed House65, Morris Avenue, Mountain Ash, CF45 3TW65, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Mar 2024£70,000 | 3 Bed House49, Morris Avenue, Mountain Ash, CF45 3TW49, 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 2023£105,000 | 3 Bed House24, Glamorgan Street, Mountain Ash, CF45 3HX24, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Oct 2022£55,000 | 3 Bed House13A, Rheola Street, Mountain Ash, CF45 3TA13A, Rheola Street, Mountain Ash, CF45 3TA
• Sold Aug 2022£102,500 | 3 Bed House14A, Rheola Street, Mountain Ash, CF45 3TA14A, Rheola Street, Mountain Ash, CF45 3TA
• Sold Mar 2022£100,000 | 3 Bed House8A, Rheola Street, Mountain Ash, CF45 3TA8A, Rheola Street, Mountain Ash, CF45 3TA
• Sold Oct 2021£89,950 | 3 Bed House19, Rheola Street, Mountain Ash, CF45 3TA19, Rheola Street, Mountain Ash, CF45 3TA
• Sold Aug 2021£85,000 | 3 Bed House10, Rheola Street, Mountain Ash, CF45 3TA10, Rheola Street, Mountain Ash, CF45 3TA
• Sold Jan 2019£53,995 | 3 Bed House12, Glanlay Street, Mountain Ash, CF45 3TL12, Glanlay Street, Mountain Ash, CF45 3TL
• Sold Feb 2016£30,000 | 3 Bed House6, Glanlay Street, Mountain Ash, CF45 3TL6, Glanlay Street, Mountain Ash, CF45 3TL

Our analysis of the public data ranks 3, Glanlay Street, Mountain Ash as the 58th largest and the 41st most expensive of the 87 addresses on Glanlay Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £48k 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.