HM Land Registry records the plot of land for 17, Coplestone Street, Mountain Ash as measuring 181 m².

That makes it the 37th largest plot in the postcode, where 38 of the 44 other houses have recorded plot data.

17, Coplestone Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 29 Mar 2025.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 17, Coplestone Street, Mountain Ash completed on 21st May 2025 at £116,500 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 8.2% over the period since May 2025.

• Sold May 2025£116,500

Since 2018 180 properties similar to 17, Coplestone Street, Mountain Ash have sold within a radius of 670 metres, per the Land Registry and our network of Estate Agents.

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

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 Jul 2025£145,000 | 3 Bed House42, Coplestone Street, Mountain Ash, CF45 3LY42, 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 Apr 2025£129,950 | 3 Bed House38, Kingcraft Street, Mountain Ash, CF45 3LT38, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Feb 2025£122,000 | 3 Bed House21, Darran Road, Mountain Ash, CF45 3HT21, Darran Road, Mountain Ash, CF45 3HT
• 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 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 Mar 2023£120,000 | 3 Bed House4, Gwernifor Street, Mountain Ash, CF45 3NA4, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Apr 2022£125,000 | 3 Bed House13, Coplestone Street, Mountain Ash, CF45 3LY13, Coplestone Street, Mountain Ash, CF45 3LY
• Sold May 2021£95,000 | 3 Bed House22, Coplestone Street, Mountain Ash, CF45 3LY22, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2021£77,000 | 3 Bed House32, Coplestone Street, Mountain Ash, CF45 3LY32, 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 Jul 2018£87,000 | 3 Bed House3, Coplestone Street, Mountain Ash, CF45 3LY3, Coplestone Street, Mountain Ash, CF45 3LY

Of the 44 addresses on Coplestone Street, Mountain Ash, CF45, 17, Coplestone Street, Mountain Ash comes out as the 30th largest and the 30th most expensive in our analysis of the public data.

It is also £29k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  600 m away
• Fernhill

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  1.4 km away
• Penrhiwceiber

  |

  1.7 km away

The flood risk here is rated Very Low, based on Environment Agency data.