HM Land Registry records the plot of land for 26, Copley Street, Mountain Ash as measuring 110 m².

That makes it the 24th largest plot in the postcode, where 27 of the 28 other houses have recorded plot data.

26, Copley Street, Mountain Ash has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 28 Aug 2025.

The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 26, Copley Street, Mountain Ash completed on 10th April 2001 at £24,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

• Sold Apr 2001£24,000

Since 2018 76 properties similar to 26, Copley Street, Mountain Ash have sold within a radius of 720 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th June 2026, was 8, Hamilton Street, Mountain Ash, CF45 3RH, a freehold house which sold for £177,500.

Read more about house prices in CF45.

• Sold Jun 2026£177,500 | 4 Bed House8, Hamilton Street, Mountain Ash, CF45 3RH8, Hamilton Street, Mountain Ash, CF45 3RH
• Sold May 2026£150,000 | 3 Bed House12, Beckett Street, Mountain Ash, CF45 4AW12, Beckett Street, Mountain Ash, CF45 4AW
• Sold Mar 2026£189,998 | 3 Bed House59, Allen Street, Mountain Ash, CF45 4BB59, Allen Street, Mountain Ash, CF45 4BB
• Sold Feb 2026£160,000 | 3 Bed House10, The Triangle, Mountain Ash, CF45 4BA10, The Triangle, Mountain Ash, CF45 4BA
• Sold Feb 2026£158,000 | 3 Bed House24, Richmond Road, Mountain Ash, CF45 4AN24, Richmond Road, Mountain Ash, CF45 4AN
• Sold Jul 2025£210,000 | 4 Bed House18, Richmond Road, Mountain Ash, CF45 4AN18, Richmond Road, Mountain Ash, CF45 4AN
• Sold Jul 2024£130,000 | 4 Bed House58, Arnold Street, Mountain Ash, CF45 4LF58, Arnold Street, Mountain Ash, CF45 4LF
• Sold Mar 2024£144,000 | 3 Bed House24, The Triangle, Mountain Ash, CF45 4BA24, The Triangle, Mountain Ash, CF45 4BA
• Sold Feb 2024£125,000 | 4 Bed House76, Phillip Street, Mountain Ash, CF45 4BG76, Phillip Street, Mountain Ash, CF45 4BG
• Sold Aug 2023£180,000 | 3 Bed House3, Beckett Street, Mountain Ash, CF45 4AW3, Beckett Street, Mountain Ash, CF45 4AW
• Sold Feb 2023£150,000 | 3 Bed House12, Richmond Road, Mountain Ash, CF45 4AN12, Richmond Road, Mountain Ash, CF45 4AN
• Sold Sep 2022£120,000 | 4 Bed House14, Phillip Street, Mountain Ash, CF45 4BE14, Phillip Street, Mountain Ash, CF45 4BE
• Sold Jul 2022£164,000 | 4 Bed House30, Richmond Road, Mountain Ash, CF45 4AN30, Richmond Road, Mountain Ash, CF45 4AN
• Sold Dec 2021£150,000 | 3 Bed House25, The Triangle, Mountain Ash, CF45 4BA25, The Triangle, Mountain Ash, CF45 4BA
• Sold Aug 2021£141,000 | 4 Bed House16, Lyndhurst Street, Mountain Ash, CF45 4AP16, Lyndhurst Street, Mountain Ash, CF45 4AP
• Sold Mar 2021£155,000 | 4 Bed House20, Beckett Street, Mountain Ash, CF45 4AW20, Beckett Street, Mountain Ash, CF45 4AW
• Sold Feb 2021£123,000 | 3 Bed House30, The Triangle, Mountain Ash, CF45 4BA30, The Triangle, Mountain Ash, CF45 4BA
• Sold Aug 2019£71,500 | 4 Bed House13, The Triangle, Mountain Ash, CF45 4BA13, The Triangle, Mountain Ash, CF45 4BA
• Sold Feb 2019£98,800 | 3 Bed House56, Allen Street, Mountain Ash, CF45 4BB56, Allen Street, Mountain Ash, CF45 4BB
• Sold Apr 2018£75,000 | 4 Bed House2, Phillip Street, Mountain Ash, CF45 4BE2, Phillip Street, Mountain Ash, CF45 4BE

Of the 28 addresses on Copley Street, Mountain Ash, CF45, 26, Copley Street, Mountain Ash comes out as the largest and the most expensive in our analysis of the public data.

It is also £7k more expensive than the average property across the CF45 district.

• Mountain Ash

  |

  600 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  2.2 km away

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