According to data from HM Land Registry, 21, Glancynon Street, Mountain Ash sits on a plot of 161 m².

We have plot size data on 20 out of 25 other houses in the postcode and 21, Glancynon Street, Mountain Ash sits on the 8th largest plot.

21, Glancynon Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 07 Mar 2024.

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 HM Land Registry, 21, Glancynon Street, Mountain Ash was last sold on 6th December 2024 for £103,000 and was recorded as a leasehold house.

The property has only had this single sale since 1995.

Since December 2024, the market for similar properties has risen by 25.7%.

• Sold Dec 2024£103,000

According to the Land Registry and our network of Estate Agents, there have been 264 sales of properties similar to 21, Glancynon Street, Mountain Ash within a radius of 620 metres since 2021.

The most recent example is 70, Clarence Street, Mountain Ash, CF45 3BD, a freehold house which sold for £135,000 on the 20th March 2026.

Read more about house prices in CF45.

• Sold Mar 2026£135,000 | 3 Bed House70, Clarence Street, Mountain Ash, CF45 3BD70, Clarence Street, Mountain Ash, CF45 3BD
• Sold Feb 2026£145,000 | 3 Bed House12, Thomas Street, Mountain Ash, CF45 3BU12, Thomas Street, Mountain Ash, CF45 3BU
• Sold Nov 2025£122,000 | 3 Bed House13, Hughes Street, Mountain Ash, CF45 3UG13, Hughes Street, Mountain Ash, CF45 3UG
• Sold Oct 2025£112,000 | 3 Bed House32, Oakland Street, Mountain Ash, CF45 3AL32, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2025£130,000 | 3 Bed House14, Oakland Street, Mountain Ash, CF45 3AL14, Oakland Street, Mountain Ash, CF45 3AL
• Sold Sep 2025£116,500 | 3 Bed House20, Ty'R Felin Street, Mountain Ash, CF45 3YR20, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold Sep 2025£125,000 | 3 Bed House26, Albany Street, Mountain Ash, CF45 3BE26, Albany Street, Mountain Ash, CF45 3BE
• Sold Apr 2025£118,000 | 3 Bed House11, Albany Street, Mountain Ash, CF45 3BE11, Albany Street, Mountain Ash, CF45 3BE
• Sold Feb 2025£99,950 | 3 Bed House7, Albany Street, Mountain Ash, CF45 3BE7, Albany Street, Mountain Ash, CF45 3BE
• Sold Dec 2024£118,500 | 3 Bed House24, Harcourt Terrace, Mountain Ash, CF45 3SD24, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Nov 2024£120,000 | 3 Bed House22, Albany Street, Mountain Ash, CF45 3BE22, Albany Street, Mountain Ash, CF45 3BE
• Sold Aug 2024£137,500 | 3 Bed House27, Oakland Street, Mountain Ash, CF45 3AL27, Oakland Street, Mountain Ash, CF45 3AL
• Sold Jul 2024£108,000 | 3 Bed House123, Woodfield Terrace, Mountain Ash, CF45 3UT123, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Sep 2023£92,500 | 3 Bed House5, Albany Street, Mountain Ash, CF45 3BE5, Albany Street, Mountain Ash, CF45 3BE
• Sold Mar 2023£120,000 | 3 Bed House15, Harcourt Terrace, Mountain Ash, CF45 3SD15, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold May 2022£75,000 | 3 Bed House4, Thomas Street, Mountain Ash, CF45 3BU4, Thomas Street, Mountain Ash, CF45 3BU
• Sold Apr 2022£125,000 | 3 Bed House21, Thomas Street, Mountain Ash, CF45 3BU21, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jan 2022£85,000 | 3 Bed House39, Thomas Street, Mountain Ash, CF45 3BU39, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jan 2022£135,000 | 3 Bed House29, Oakland Street, Mountain Ash, CF45 3AL29, Oakland Street, Mountain Ash, CF45 3AL
• Sold Nov 2021£122,500 | 3 Bed House15, Hughes Street, Mountain Ash, CF45 3UG15, 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, 21, Glancynon Street, Mountain Ash is the 18th largest and the 16th most expensive property on the street.

When compared to the postcode district it is £34k 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.