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

Of the 44 other houses in this postcode, 42 have recorded plot sizes, and this one ranks as the 38th largest.

33, Seymour Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 11 Oct 2022.

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

Land Registry records and our Estate Agent network show 68 sales of comparable properties within 610 metres of 33, Seymour Street, Mountain Ash since 2018.

Most recently, 15, Cliff Street, Mountain Ash, CF45 3LE, a freehold house, sold at £103,000 on the 10th June 2026.

Read more about house prices in CF45.

• Sold Jun 2026£103,000 | 3 Bed House15, Cliff Street, Mountain Ash, CF45 3LE15, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Apr 2025£120,000 | 3 Bed House22, Allen Street, Mountain Ash, CF45 4BD22, Allen Street, Mountain Ash, CF45 4BD
• Sold Dec 2023£100,000 | 3 Bed House82, Phillip Street, Mountain Ash, CF45 4BG82, Phillip Street, Mountain Ash, CF45 4BG
• Sold Dec 2023£56,500 | 3 Bed House58A, Duffryn Street, Mountain Ash, CF45 3HR58A, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Oct 2023£125,100 | 3 Bed House21, Phillip Street, Mountain Ash, CF45 4BE21, Phillip Street, Mountain Ash, CF45 4BE
• Sold Mar 2023£110,000 | 3 Bed House45, Arnold Street, Mountain Ash, CF45 4LF45, Arnold Street, Mountain Ash, CF45 4LF
• Sold Jul 2022£75,000 | 3 Bed House24A, Allen Street, Mountain Ash, CF45 4BD24A, Allen Street, Mountain Ash, CF45 4BD
• Sold May 2022£92,500 | 3 Bed House16, Copley Street, Mountain Ash, CF45 4AS16, Copley Street, Mountain Ash, CF45 4AS
• Sold Apr 2022£106,000 | 3 Bed House16, Allen Street, Mountain Ash, CF45 4BD16, Allen Street, Mountain Ash, CF45 4BD
• Sold Nov 2021£63,250 | 3 Bed House34, Seymour Street, Mountain Ash, CF45 4BL34, Seymour Street, Mountain Ash, CF45 4BL
• Sold Nov 2021£68,500 | 3 Bed House19, London Street, Mountain Ash, CF45 4BN19, London Street, Mountain Ash, CF45 4BN
• Sold Sep 2021£90,000 | 3 Bed House85, Phillip Street, Mountain Ash, CF45 4BG85, Phillip Street, Mountain Ash, CF45 4BG
• Sold May 2021£65,500 | 2 Bed House13, Allen Street, Mountain Ash, CF45 4BD13, Allen Street, Mountain Ash, CF45 4BD
• Sold Feb 2021£83,000 | 3 Bed House27, Seymour Street, Mountain Ash, CF45 4BL27, Seymour Street, Mountain Ash, CF45 4BL
• Sold Nov 2020£55,000 | 3 Bed House46, Phillip Street, Mountain Ash, CF45 4BG46, Phillip Street, Mountain Ash, CF45 4BG
• Sold Apr 2020£58,000 | 3 Bed House4, Allen Street, Mountain Ash, CF45 4BD4, Allen Street, Mountain Ash, CF45 4BD
• Sold Apr 2020£93,500 | 3 Bed House35, Seymour Street, Mountain Ash, CF45 4BL35, Seymour Street, Mountain Ash, CF45 4BL
• Sold Jan 2020£61,000 | 3 Bed House87, Phillip Street, Mountain Ash, CF45 4BG87, Phillip Street, Mountain Ash, CF45 4BG
• Sold Nov 2018£52,950 | 3 Bed House95, Phillip Street, Mountain Ash, CF45 4BG95, Phillip Street, Mountain Ash, CF45 4BG

Our analysis of the public data ranks 33, Seymour Street, Mountain Ash as the 41st largest and the 41st most expensive of the 44 addresses on Seymour Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £51k less expensive than the typical property.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  2.0 km away

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