According to data from HM Land Registry, 42, Coplestone Street, Mountain Ash sits on a plot of 198 m².

We have plot size data on 38 out of 44 other houses in the postcode and 42, Coplestone Street, Mountain Ash sits on the 24th largest plot.

42, Coplestone Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Nov 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, 42, Coplestone Street, Mountain Ash was last sold on 28th July 2025 for £145,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since July 2025, the market for similar properties has risen by 7.8%.

• Sold Jul 2025£145,000
• Sold Feb 2004£33,000

According to the Land Registry and our network of Estate Agents, there have been 161 sales of properties similar to 42, Coplestone Street, Mountain Ash within a radius of 690 metres since 2016.

The most recent example is 3, Gwernifor Street, Mountain Ash, CF45 3NA, a freehold house which sold for £150,000 on the 3rd February 2026.

Read more about house prices in CF45.

• Sold Feb 2026£150,000 | 3 Bed House3, Gwernifor Street, Mountain Ash, CF45 3NA3, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Nov 2025£150,000 | 3 Bed House29, Coplestone Street, Mountain Ash, CF45 3LY29, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Jun 2025£132,500 | 3 Bed House28, Kingcraft Street, Mountain Ash, CF45 3LT28, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold May 2025£116,500 | 3 Bed House17, Coplestone Street, Mountain Ash, CF45 3LY17, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2025£129,950 | 3 Bed House38, Kingcraft Street, Mountain Ash, CF45 3LT38, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Feb 2025£100,000 | 3 Bed House10, Coplestone Street, Mountain Ash, CF45 3LY10, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Feb 2025£73,000 | 3 Bed House4, Coplestone Street, Mountain Ash, CF45 3LY4, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Nov 2024£120,000 | 3 Bed House3, Aberpennar Street, Mountain Ash, CF45 3LS3, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Oct 2024£130,000 | 4 Bed House23, Coplestone Street, Mountain Ash, CF45 3LY23, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Sep 2024£170,000 | 3 Bed House24, Gwernifor Street, Mountain Ash, CF45 3NA24, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Aug 2024£105,000 | 3 Bed House43, Aberpennar Street, Mountain Ash, CF45 3LS43, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Apr 2024£110,000 | 3 Bed House47, Aberpennar Street, Mountain Ash, CF45 3LS47, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Mar 2024£114,000 | 3 Bed House46, Aberpennar Street, Mountain Ash, CF45 3LS46, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Feb 2024£112,500 | 3 Bed House12, Coplestone Street, Mountain Ash, CF45 3LY12, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Nov 2022£120,000 | 3 Bed House8, Kingcraft Street, Mountain Ash, CF45 3LT8, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Oct 2022£130,000 | 3 Bed House16, Kingcraft Street, Mountain Ash, CF45 3LT16, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Apr 2022£125,000 | 3 Bed House13, Coplestone Street, Mountain Ash, CF45 3LY13, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Feb 2022£138,000 | 4 Bed House36, Coplestone Street, Mountain Ash, CF45 3LY36, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Dec 2019£112,000 | 3 Bed House21, Coplestone Street, Mountain Ash, CF45 3LY21, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Sep 2016£58,000 | 3 Bed House39, Coplestone Street, Mountain Ash, CF45 3LY39, Coplestone Street, Mountain Ash, CF45 3LY

Coplestone Street, Mountain Ash, CF45 has a total of 44 addresses. According to our analysis of all the public data, 42, Coplestone Street, Mountain Ash is the 21st largest and the 21st most expensive property on the street.

When compared to the postcode district it is £27k less expensive than the average property in CF45.

• Mountain Ash

  |

  600 m away
• Fernhill

  |

  1.4 km away
• Penrhiwceiber

  |

  1.7 km away

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