According to data from HM Land Registry, 18, Glancynon Street, Mountain Ash sits on a plot of 169 m².

We have plot size data on 20 out of 25 other houses in the postcode and 18, Glancynon Street, Mountain Ash sits on the 3rd largest plot.

18, Glancynon Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Jul 2009.

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, 18, Glancynon Street, Mountain Ash was last sold on 9th December 2009 for £91,000 and was recorded as a leasehold house.

The property has had 2 sales since 1995.

Since December 2009, the market for similar properties has risen by 119.8%.

• Sold Dec 2009£91,000
• Sold Nov 2000£38,000

According to the Land Registry and our network of Estate Agents, there have been 189 sales of properties similar to 18, Glancynon Street, Mountain Ash within a radius of 620 metres since 2019.

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 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 Nov 2025£65,000 | 3 Bed House110, Woodfield Terrace, Mountain Ash, CF45 3UT110, Woodfield Terrace, Mountain Ash, CF45 3UT
• 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 Jun 2025£135,000 | 3 Bed House3, Glancynon Street, Mountain Ash, CF45 3YU3, Glancynon Street, Mountain Ash, CF45 3YU
• Sold Jun 2025£98,000 | 3 Bed House96, Clarence Street, Mountain Ash, CF45 3BD96, Clarence Street, Mountain Ash, CF45 3BD
• Sold Jun 2025£127,500 | 3 Bed House27, Edward Street, Mountain Ash, CF45 3AJ27, Edward Street, Mountain Ash, CF45 3AJ
• Sold Apr 2025£74,100 | 3 Bed House6, Edward Street, Mountain Ash, CF45 3AJ6, Edward Street, Mountain Ash, CF45 3AJ
• Sold Jul 2024£108,000 | 3 Bed House123, Woodfield Terrace, Mountain Ash, CF45 3UT123, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Apr 2024£117,000 | 3 Bed HouseGlanffrwd Villa, Woodfield Terrace, Mountain Ash, CF45 3UTGlanffrwd Villa, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Jan 2024£83,000 | 3 Bed House38, Ty'R Felin Street, Mountain Ash, CF45 3YR38, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold Aug 2023£105,000 | 3 Bed House28, Ty'R Felin Street, Mountain Ash, CF45 3YR28, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold May 2023£115,000 | 3 Bed House40, Oakland Street, Mountain Ash, CF45 3AL40, Oakland Street, Mountain Ash, CF45 3AL
• Sold Jan 2022£85,000 | 3 Bed House39, Thomas Street, Mountain Ash, CF45 3BU39, Thomas Street, Mountain Ash, CF45 3BU
• Sold Sep 2021£99,000 | 3 Bed House5, Harcourt Terrace, Mountain Ash, CF45 3SD5, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Feb 2021£57,500 | 3 Bed House14, Thomas Street, Mountain Ash, CF45 3BU14, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jun 2019£750 | 3 Bed House18, Thomas Street, Mountain Ash, CF45 3BU18, Thomas Street, Mountain Ash, CF45 3BU

Glancynon Street, Mountain Ash, CF45 has a total of 28 addresses. According to our analysis of all the public data, 18, Glancynon Street, Mountain Ash is the 10th largest and the 8th most expensive property on the street.

When compared to the postcode district it is £26k 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.