According to data from HM Land Registry, 9, Oak Terrace, Mountain Ash sits on a plot of 246 m².

We have plot size data on 14 out of 14 other houses in the postcode and 9, Oak Terrace, Mountain Ash sits on the 11th largest plot.

9, Oak Terrace, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 22 Oct 2025.

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 the Land Registry and our network of Estate Agents, there have been 153 sales of properties similar to 9, Oak Terrace, Mountain Ash within a radius of 720 metres since 2019.

The most recent example is 61, Tanycoed Street, Mountain Ash, CF45 3YH, a freehold house which sold for £72,500 on the 31st March 2026.

Read more about house prices in CF45.

• Sold Mar 2026£72,500 | 3 Bed House61, Tanycoed Street, Mountain Ash, CF45 3YH61, Tanycoed Street, Mountain Ash, CF45 3YH
• Sold Jan 2026£100,000 | 3 Bed House30, Penybryn Terrace, Mountain Ash, CF45 3TJ30, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold Dec 2025£79,250 | 3 Bed House67, Woodfield Terrace, Mountain Ash, CF45 3YA67, Woodfield Terrace, Mountain Ash, CF45 3YA
• Sold Nov 2025£116,000 | 3 Bed House55, Park Street, Mountain Ash, CF45 3YW55, Park Street, Mountain Ash, CF45 3YW
• Sold Jul 2025£75,000 | 3 Bed House85, Woodfield Terrace, Mountain Ash, CF45 3YA85, Woodfield Terrace, Mountain Ash, CF45 3YA
• Sold May 2025£77,500 | 3 Bed House31, Penybryn Terrace, Mountain Ash, CF45 3TJ31, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold May 2025£80,000 | 3 Bed House1, Penybryn Terrace, Mountain Ash, CF45 3TJ1, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold May 2025£85,000 | 3 Bed House161, Penrhiwceiber Road, Mountain Ash, CF45 3SG161, Penrhiwceiber Road, Mountain Ash, CF45 3SG
• Sold Oct 2024£117,500 | 3 Bed House89, Woodfield Terrace, Mountain Ash, CF45 3YA89, Woodfield Terrace, Mountain Ash, CF45 3YA
• Sold Sep 2024£103,000 | 3 Bed House18, Park Street, Mountain Ash, CF45 3YL18, Park Street, Mountain Ash, CF45 3YL
• Sold Jul 2024£86,500 | 3 Bed House37, Tanycoed Street, Mountain Ash, CF45 3YH37, Tanycoed Street, Mountain Ash, CF45 3YH
• Sold Jun 2024£105,000 | 3 Bed House25, Dilwyn Street, Mountain Ash, CF45 3YG25, Dilwyn Street, Mountain Ash, CF45 3YG
• Sold Sep 2023£50,000 | 3 Bed House12, Dilwyn Street, Mountain Ash, CF45 3YG12, Dilwyn Street, Mountain Ash, CF45 3YG
• Sold Feb 2023£55,000 | 3 Bed House19, Park Street, Mountain Ash, CF45 3YW19, Park Street, Mountain Ash, CF45 3YW
• Sold Jan 2023£84,000 | 3 Bed House11, Park Street, Mountain Ash, CF45 3YW11, Park Street, Mountain Ash, CF45 3YW
• Sold Mar 2022£56,000 | 3 Bed House22, Penybryn Terrace, Mountain Ash, CF45 3TJ22, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold Mar 2022£66,000 | 3 Bed House19, Penybryn Terrace, Mountain Ash, CF45 3TJ19, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold Jun 2021£70,000 | 3 Bed House6, Penybryn Terrace, Mountain Ash, CF45 3TJ6, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold Apr 2021£50,250 | 3 Bed House3, Dilwyn Street, Mountain Ash, CF45 3YG3, Dilwyn Street, Mountain Ash, CF45 3YG
• Sold Dec 2019£50,000 | 3 Bed House16, Penybryn Terrace, Mountain Ash, CF45 3TJ16, Penybryn Terrace, Mountain Ash, CF45 3TJ

Oak Terrace, Mountain Ash, CF45 has a total of 24 addresses. According to our analysis of all the public data, 9, Oak Terrace, Mountain Ash is the 13th largest and the 13th most expensive property on the street.

When compared to the postcode district it is £72k less expensive than the average property in CF45.

• Penrhiwceiber

  |

  500 m away
• Mountain Ash

  |

  1.5 km away
• Fernhill

  |

  2.8 km away

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