According to data from HM Land Registry, 4, Cwm Alarch Close, Mountain Ash sits on a plot of 598 m².

We have plot size data on 3 out of 6 other houses in the postcode and 4, Cwm Alarch Close, Mountain Ash sits on the 2nd largest plot.

4, Cwm Alarch Close, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 Nov 2013.

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, 4, Cwm Alarch Close, Mountain Ash was last sold on 31st March 2021 for £165,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since March 2021, the market for similar properties has risen by 107.7%.

• Sold Mar 2021£165,000

According to the Land Registry and our network of Estate Agents, there have been 28 sales of properties similar to 4, Cwm Alarch Close, Mountain Ash within a radius of 1.1 kilometres since 2008.

The most recent example is 39, Forest View, Mountain Ash, CF45 3DU, a freehold house which sold for £169,950 on the 17th July 2025.

Read more about house prices in CF45.

• Sold Jul 2025£169,950 | 3 Bed House39, Forest View, Mountain Ash, CF45 3DU39, Forest View, Mountain Ash, CF45 3DU
• Sold Feb 2023£190,000 | 3 Bed House21, Forest View, Mountain Ash, CF45 3DU21, Forest View, Mountain Ash, CF45 3DU
• Sold Jan 2023£190,000 | 3 Bed House74, Forest View, Mountain Ash, CF45 3DU74, Forest View, Mountain Ash, CF45 3DU
• Sold Jul 2022£230,000 | 3 Bed House75, Forest View, Mountain Ash, CF45 3DU75, Forest View, Mountain Ash, CF45 3DU
• Sold Jul 2022£200,000 | 3 Bed House24, Trem Y Dyffryn, Mountain Ash, CF45 4AQ24, Trem Y Dyffryn, Mountain Ash, CF45 4AQ
• Sold Dec 2021£210,000 | 3 Bed House31, Forest View, Mountain Ash, CF45 3DU31, Forest View, Mountain Ash, CF45 3DU
• Sold Dec 2021£180,000 | 3 Bed House4, Cwm Alarch, Mountain Ash, CF45 3DR4, Cwm Alarch, Mountain Ash, CF45 3DR
• Sold Sep 2021£160,000 | 3 Bed House9, Cwm Alarch, Mountain Ash, CF45 3DR9, Cwm Alarch, Mountain Ash, CF45 3DR
• Sold Mar 2020£130,000 | 3 Bed House17, Glenbrook, Mountain Ash, CF45 3DH17, Glenbrook, Mountain Ash, CF45 3DH
• Sold Jul 2019£131,000 | 3 Bed House16, Boi Close, Mountain Ash, CF45 3DP16, Boi Close, Mountain Ash, CF45 3DP
• Sold Apr 2019£123,000 | 3 Bed House61, Forest View, Mountain Ash, CF45 3DU61, Forest View, Mountain Ash, CF45 3DU
• Sold Sep 2018£100,000 | 3 Bed House21, Glenboi, Mountain Ash, CF45 3DG21, Glenboi, Mountain Ash, CF45 3DG
• Sold Mar 2018£134,995 | 3 Bed House64, Forest View, Mountain Ash, CF45 3DU64, Forest View, Mountain Ash, CF45 3DU
• 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 Oct 2015£132,000 | 3 Bed House5A, Glenboi, Mountain Ash, CF45 3DG5A, Glenboi, Mountain Ash, CF45 3DG
• Sold Jul 2015£130,000 | 3 Bed House1, Glen Close, Mountain Ash, CF45 3DL1, Glen Close, Mountain Ash, CF45 3DL
• Sold Jan 2015£100,000 | 3 Bed House3, Glen Close, Mountain Ash, CF45 3DL3, Glen Close, Mountain Ash, CF45 3DL
• Sold Nov 2014£120,000 | 3 Bed House2, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW2, Abercwmboi Isaf Road, Mountain Ash, CF45 3DW
• Sold Jun 2008£110,000 | 3 Bed House2, Glenboi, Mountain Ash, CF45 3DG2, Glenboi, Mountain Ash, CF45 3DG

Cwm Alarch Close, Mountain Ash, CF45 has a total of 6 addresses. According to our analysis of all the public data, 4, Cwm Alarch Close, Mountain Ash is the 6th largest and the 6th most expensive property on the street.

When compared to the postcode district it is £57k more expensive than the average property in CF45.

• Fernhill

  |

  300 m away
• Mountain Ash

  |

  1.3 km away
• Cwmbach

  |

  2.4 km away

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