According to data from HM Land Registry, 25, Glancynon Street, Mountain Ash sits on a plot of 139 m².

We have plot size data on 20 out of 25 other houses in the postcode and 25, Glancynon Street, Mountain Ash sits on the 12th largest plot.

25, Glancynon Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 09 Jul 2021.

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

According to the Land Registry and our network of Estate Agents, there have been 69 sales of properties similar to 25, Glancynon Street, Mountain Ash within a radius of 610 metres since 2019.

The most recent example is 9, Clarence Street, Mountain Ash, CF45 3BB, a freehold house which sold for £130,000 on the 17th April 2026.

Read more about house prices in CF45.

• Sold Apr 2026£130,000 | 4 Bed House9, Clarence Street, Mountain Ash, CF45 3BB9, Clarence Street, Mountain Ash, CF45 3BB
• Sold Dec 2025£130,000 | 4 Bed House76, Consort Street, Mountain Ash, CF45 3AU76, Consort Street, Mountain Ash, CF45 3AU
• Sold Dec 2025£130,000 | 3 Bed House11, Clarence Street, Mountain Ash, CF45 3BB11, Clarence Street, Mountain Ash, CF45 3BB
• Sold Nov 2025£108,000 | 3 Bed House111, Woodfield Terrace, Mountain Ash, CF45 3UT111, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Nov 2025£120,000 | 3 Bed House100, Woodfield Terrace, Mountain Ash, CF45 3UT100, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Jun 2025£135,000 | 3 Bed House3, Glancynon Street, Mountain Ash, CF45 3YU3, Glancynon Street, Mountain Ash, CF45 3YU
• Sold Jun 2025£127,500 | 3 Bed House27, Edward Street, Mountain Ash, CF45 3AJ27, Edward Street, Mountain Ash, CF45 3AJ
• Sold Nov 2024£140,000 | 4 Bed House20, Harcourt Terrace, Mountain Ash, CF45 3SD20, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Jun 2024£47,000 | 3 Bed House40, Thomas Street, Mountain Ash, CF45 3BU40, Thomas Street, Mountain Ash, CF45 3BU
• Sold Dec 2023£18,000 | 4 Bed House1A, Thomas Street, Mountain Ash, CF45 3BU1A, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jun 2023£147,500 | 3 Bed HouseBryncerdyn Villa, Woodfield Terrace, Mountain Ash, CF45 3UTBryncerdyn Villa, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold May 2023£115,000 | 3 Bed House40, Oakland Street, Mountain Ash, CF45 3AL40, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2022£136,500 | 3 Bed HouseGlyntaf Villa, Woodfield Terrace, Mountain Ash, CF45 3UTGlyntaf Villa, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Aug 2022£149,950 | 4 Bed House37, Thomas Street, Mountain Ash, CF45 3BU37, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jun 2022£92,000 | 3 Bed House23, Arthur Street, Mountain Ash, CF45 3BL23, Arthur Street, Mountain Ash, CF45 3BL
• Sold Oct 2021£105,000 | 3 Bed House16, Consort Street, Mountain Ash, CF45 3AY16, Consort Street, Mountain Ash, CF45 3AY
• Sold Sep 2021£140,000 | 4 Bed House1, Thomas Street, Mountain Ash, CF45 3BU1, Thomas Street, Mountain Ash, CF45 3BU
• Sold Sep 2021£125,000 | 3 Bed HouseGlenhill Villa, Woodfield Terrace, Mountain Ash, CF45 3UTGlenhill Villa, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Jul 2021£105,000 | 4 Bed House23, Mount Pleasant Terrace, Mountain Ash, CF45 3AN23, Mount Pleasant Terrace, Mountain Ash, CF45 3AN
• Sold May 2019£90,000 | 4 Bed House2, Hughes Street, Mountain Ash, CF45 3UG2, Hughes Street, Mountain Ash, CF45 3UG

Glancynon Street, Mountain Ash, CF45 has a total of 28 addresses. According to our analysis of all the public data, 25, Glancynon Street, Mountain Ash is the 2nd largest and the 2nd most expensive property on the street.

When compared to the postcode district it is £12k less expensive than the average property in CF45.

• Mountain Ash

  |

  900 m away
• Penrhiwceiber

  |

  900 m away
• Fernhill

  |

  2.2 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.