According to data from HM Land Registry, 25, Glenboi, Mountain Ash sits on a plot of 373 m².

We have plot size data on 30 out of 44 other houses in the postcode and 25, Glenboi, Mountain Ash sits on the 24th largest plot.

25, Glenboi, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 15 May 2014.

The property is not 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, 25, Glenboi, Mountain Ash was last sold on 3rd July 2015 for £99,950 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since July 2015, the market for similar properties has risen by 182.8%.

• Sold Jul 2015£99,950

According to the Land Registry and our network of Estate Agents, there have been 33 sales of properties similar to 25, Glenboi, Mountain Ash within a radius of 1.3 kilometres since 2012.

The most recent example is 8, Meadow Close, Mountain Ash, CF45 3DN, a freehold house which sold for £200,000 on the 21st November 2025.

Read more about house prices in CF45.

• Sold Nov 2025£200,000 | 3 Bed House8, Meadow Close, Mountain Ash, CF45 3DN8, Meadow Close, Mountain Ash, CF45 3DN
• Sold Jul 2025£225,000 | 3 Bed House32, Forest View, Mountain Ash, CF45 3DU32, Forest View, Mountain Ash, CF45 3DU
• Sold Mar 2024£160,000 | 3 Bed House21, Trem Y Dyffryn, Mountain Ash, CF45 4AQ21, Trem Y Dyffryn, Mountain Ash, CF45 4AQ
• Sold Jan 2024£225,000 | 3 Bed House18, Glenbrook, Mountain Ash, CF45 3DH18, Glenbrook, Mountain Ash, CF45 3DH
• Sold Dec 2022£180,000 | 3 Bed House8, Glenbrook, Mountain Ash, CF45 3DH8, Glenbrook, Mountain Ash, CF45 3DH
• Sold Dec 2021£210,000 | 3 Bed House31, Forest View, Mountain Ash, CF45 3DU31, Forest View, Mountain Ash, CF45 3DU
• Sold Oct 2021£165,000 | 3 Bed House3, Glenbrook, Mountain Ash, CF45 3DH3, Glenbrook, Mountain Ash, CF45 3DH
• Sold Sep 2021£160,000 | 3 Bed House9, Cwm Alarch, Mountain Ash, CF45 3DR9, Cwm Alarch, Mountain Ash, CF45 3DR
• Sold Aug 2017£149,000 | 3 Bed House3, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW3, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW
• Sold Jul 2017£164,995 | 3 Bed House19, Glenboi, Mountain Ash, CF45 3DG19, Glenboi, Mountain Ash, CF45 3DG
• Sold Jan 2017£149,000 | 3 Bed House4, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW4, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW
• Sold Aug 2016£105,000 | 3 Bed House10, Glenboi, Mountain Ash, CF45 3DG10, Glenboi, Mountain Ash, CF45 3DG
• Sold Jun 2016£124,950 | 3 Bed House67, Forest View, Mountain Ash, CF45 3DU67, Forest View, Mountain Ash, CF45 3DU
• Sold Apr 2016£125,000 | 3 Bed House6, Cwm Alarch, Mountain Ash, CF45 3DR6, Cwm Alarch, Mountain Ash, CF45 3DR
• Sold Mar 2016£127,000 | 3 Bed House6, Glenbrook, Mountain Ash, CF45 3DH6, Glenbrook, Mountain Ash, CF45 3DH
• Sold Nov 2015£100,000 | 3 Bed House26, Glenboi, Mountain Ash, CF45 3DG26, Glenboi, Mountain Ash, CF45 3DG
• Sold Oct 2015£132,000 | 3 Bed House5A, Glenboi, Mountain Ash, CF45 3DG5A, Glenboi, Mountain Ash, CF45 3DG
• Sold Jul 2014£155,000 | 3 Bed House32, Glenboi, Mountain Ash, CF45 3DG32, Glenboi, Mountain Ash, CF45 3DG
• Sold May 2013£110,000 | 3 Bed House11, Glenboi, Mountain Ash, CF45 3DG11, Glenboi, Mountain Ash, CF45 3DG
• Sold May 2012£160,000 | 3 Bed House36, Glenboi, Mountain Ash, CF45 3DG36, Glenboi, Mountain Ash, CF45 3DG

Glenboi, Mountain Ash, CF45 has a total of 48 addresses. According to our analysis of all the public data, 25, Glenboi, Mountain Ash is the 16th largest and the 22nd most expensive property on the street.

When compared to the postcode district it is £78k more expensive than the average property in CF45.

• Fernhill

  |

  100 m away
• Mountain Ash

  |

  1.5 km away
• Cwmbach

  |

  2.1 km away

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