HM Land Registry records the plot of land for 14, Rock Street, Mountain Ash as measuring 139 m².

That makes it the 10th largest plot in the postcode, where 21 of the 23 other houses have recorded plot data.

14, Rock Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 04 Apr 2019.

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 14, Rock Street, Mountain Ash completed on 13th December 2019 at £90,000 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 85.3% over the period since December 2019.

• Sold Dec 2019£90,000

Since 2020 251 properties similar to 14, Rock Street, Mountain Ash have sold within a radius of 590 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 24th April 2026, was 16, Lyle Street, Mountain Ash, CF45 3RG, a freehold house which sold for £95,000.

Read more about house prices in CF45.

• Sold Apr 2026£95,000 | 3 Bed House16, Lyle Street, Mountain Ash, CF45 3RG16, Lyle Street, Mountain Ash, CF45 3RG
• Sold Mar 2026£155,000 | 3 Bed House13, Gorsedd Street, Mountain Ash, CF45 3LR13, Gorsedd Street, Mountain Ash, CF45 3LR
• Sold Dec 2025£95,000 | 3 Bed House8, Woodland Terrace, Mountain Ash, CF45 3RF8, Woodland Terrace, Mountain Ash, CF45 3RF
• Sold Nov 2025£150,000 | 3 Bed House29, Coplestone Street, Mountain Ash, CF45 3LY29, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• 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 Jan 2025£81,500 | 3 Bed House2, Cliff Street, Mountain Ash, CF45 3LE2, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jul 2024£77,000 | 3 Bed House15, Lyle Street, Mountain Ash, CF45 3RG15, Lyle Street, Mountain Ash, CF45 3RG
• Sold May 2024£112,000 | 3 Bed House7, Rock Street, Mountain Ash, CF45 3LP7, Rock Street, Mountain Ash, CF45 3LP
• 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 May 2022£137,500 | 3 Bed House19, Gorsedd Street, Mountain Ash, CF45 3LR19, Gorsedd Street, Mountain Ash, CF45 3LR
• Sold Dec 2021£121,500 | 3 Bed House12, Darran Road, Mountain Ash, CF45 3HT12, Darran Road, Mountain Ash, CF45 3HT
• Sold Jun 2021£129,000 | 3 Bed House36, Kingcraft Street, Mountain Ash, CF45 3LT36, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Feb 2021£68,000 | 3 Bed House58, Duffryn Street, Mountain Ash, CF45 3HR58, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Dec 2020£97,500 | 3 Bed House30, Gorsedd Street, Mountain Ash, CF45 3LR30, Gorsedd Street, Mountain Ash, CF45 3LR
• Sold Mar 2020£87,500 | 3 Bed House2, Aberpennar Street, Mountain Ash, CF45 3LS2, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Feb 2020£80,500 | 3 Bed House28, Aberpennar Street, Mountain Ash, CF45 3LS28, Aberpennar Street, Mountain Ash, CF45 3LS

Of the 23 addresses on Rock Street, Mountain Ash, CF45, 14, Rock Street, Mountain Ash comes out as the 7th largest and the 6th most expensive in our analysis of the public data.

It is also £23k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.2 km away
• Penrhiwceiber

  |

  1.8 km away

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