4, Mary Street, Mountain Ash occupies a 142 m² plot as recorded by HM Land Registry.

Of the 47 other houses in this postcode, 40 have recorded plot sizes, and this one ranks as the 28th largest.

4, Mary Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 24 Sep 2022.

The property is connected to mains gas and has fully double glazed windows. It is heated using room heaters (electric).

Land Registry records and our Estate Agent network show 270 sales of comparable properties within 710 metres of 4, Mary Street, Mountain Ash since 2015.

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 Jan 2026£114,950 | 3 Bed House62, Cardiff Road, Mountain Ash, CF45 4HD62, Cardiff Road, Mountain Ash, CF45 4HD
• Sold Nov 2025£122,000 | 3 Bed House13, Hughes Street, Mountain Ash, CF45 3UG13, Hughes Street, Mountain Ash, CF45 3UG
• Sold Oct 2025£89,000 | 3 Bed House36, Mary Street, Mountain Ash, CF45 4HH36, Mary Street, Mountain Ash, CF45 4HH
• Sold Oct 2025£112,000 | 3 Bed House32, Oakland Street, Mountain Ash, CF45 3AL32, Oakland Street, Mountain Ash, CF45 3AL
• Sold Mar 2025£110,000 | 3 Bed House36, Glyngwyn Street, Mountain Ash, CF45 3AF36, Glyngwyn Street, Mountain Ash, CF45 3AF
• Sold Sep 2024£110,000 | 3 Bed House17, Mary Street, Mountain Ash, CF45 4HH17, Mary Street, Mountain Ash, CF45 4HH
• Sold Aug 2024£137,500 | 3 Bed House27, Oakland Street, Mountain Ash, CF45 3AL27, Oakland Street, Mountain Ash, CF45 3AL
• Sold Aug 2024£112,000 | 3 Bed House17, Consort Street, Mountain Ash, CF45 3AY17, Consort Street, Mountain Ash, CF45 3AY
• Sold Nov 2023£127,500 | 3 Bed House14, Mary Street, Mountain Ash, CF45 4HH14, Mary Street, Mountain Ash, CF45 4HH
• Sold Aug 2023£100,000 | 3 Bed House33, Mary Street, Mountain Ash, CF45 4HH33, Mary Street, Mountain Ash, CF45 4HH
• Sold Jun 2023£45,000 | 3 Bed House60, Cardiff Road, Mountain Ash, CF45 4HD60, Cardiff Road, Mountain Ash, CF45 4HD
• Sold Oct 2021£85,000 | 3 Bed House42, Mary Street, Mountain Ash, CF45 4HH42, Mary Street, Mountain Ash, CF45 4HH
• Sold Oct 2020£82,000 | 3 Bed House27, Mary Street, Mountain Ash, CF45 4HH27, Mary Street, Mountain Ash, CF45 4HH
• Sold Feb 2020£66,000 | 3 Bed House12, Mary Street, Mountain Ash, CF45 4HH12, Mary Street, Mountain Ash, CF45 4HH
• Sold Feb 2020£75,000 | 3 Bed House35, Mary Street, Mountain Ash, CF45 4HH35, Mary Street, Mountain Ash, CF45 4HH
• Sold Jan 2019£70,000 | 3 Bed House13, Mary Street, Mountain Ash, CF45 4HH13, Mary Street, Mountain Ash, CF45 4HH
• Sold Jun 2018£45,000 | 3 Bed House20, Mary Street, Mountain Ash, CF45 4HH20, Mary Street, Mountain Ash, CF45 4HH
• Sold Mar 2016£75,000 | 3 Bed House7, Mary Street, Mountain Ash, CF45 4HH7, Mary Street, Mountain Ash, CF45 4HH
• Sold Dec 2015£44,500 | 3 Bed House31, Mary Street, Mountain Ash, CF45 4HH31, Mary Street, Mountain Ash, CF45 4HH

Our analysis of the public data ranks 4, Mary Street, Mountain Ash as the 18th largest and the 19th most expensive of the 47 addresses on Mary Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £39k less expensive than the typical property.

• Mountain Ash

  |

  600 m away
• Penrhiwceiber

  |

  1.1 km away
• Fernhill

  |

  2.1 km away

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