HM Land Registry records the plot of land for 18, Brynheulog, Mountain Ash as measuring 219 m².

That makes it the 42nd largest plot in the postcode, where all 56 other houses have recorded plot data.

18, Brynheulog, Mountain Ash has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 23 Nov 2009.

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

The most recent sale of 18, Brynheulog, Mountain Ash completed on 1st July 2011 at £30,000 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 169.9% over the period since July 2011.

• Sold Jul 2011£30,000

Since 2015 134 properties similar to 18, Brynheulog, Mountain Ash have sold within a radius of 750 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 30th January 2026, was 30, Penybryn Terrace, Mountain Ash, CF45 3TJ, a freehold house which sold for £100,000.

Read more about house prices in CF45.

• Sold Jan 2026£100,000 | 3 Bed House30, Penybryn Terrace, Mountain Ash, CF45 3TJ30, Penybryn Terrace, Mountain Ash, CF45 3TJ
• Sold Nov 2025£65,000 | 3 Bed House110, Woodfield Terrace, Mountain Ash, CF45 3UT110, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Sep 2025£116,500 | 3 Bed House20, Ty'R Felin Street, Mountain Ash, CF45 3YR20, Ty'R Felin Street, Mountain Ash, CF45 3YR
• Sold Mar 2025£105,000 | 3 Bed House58, Brynheulog, Mountain Ash, CF45 3DJ58, Brynheulog, Mountain Ash, CF45 3DJ
• Sold Oct 2024£95,000 | 3 Bed House116, Penrhiwceiber Road, Mountain Ash, CF45 3SL116, Penrhiwceiber Road, Mountain Ash, CF45 3SL
• Sold Jul 2024£83,500 | 3 Bed House54, Woodfield Terrace, Mountain Ash, CF45 3UU54, Woodfield Terrace, Mountain Ash, CF45 3UU
• Sold Jul 2024£86,500 | 3 Bed House37, Tanycoed Street, Mountain Ash, CF45 3YH37, Tanycoed Street, Mountain Ash, CF45 3YH
• Sold Jul 2024£118,000 | 3 Bed House64, Morris Avenue, Mountain Ash, CF45 3TW64, Morris Avenue, Mountain Ash, CF45 3TW
• Sold May 2024£105,000 | 3 Bed House11, Oak Terrace, Mountain Ash, CF45 3PX11, Oak Terrace, Mountain Ash, CF45 3PX
• Sold Apr 2024£80,000 | 3 Bed House10, Oak Terrace, Mountain Ash, CF45 3PX10, Oak Terrace, Mountain Ash, CF45 3PX
• Sold Feb 2024£105,000 | 3 Bed House67, Morris Avenue, Mountain Ash, CF45 3TW67, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Apr 2023£91,000 | 3 Bed HouseKinley House, Morris Avenue, Mountain Ash, CF45 3TWKinley House, Morris Avenue, Mountain Ash, CF45 3TW
• Sold Oct 2022£100,000 | 3 Bed House34, Brynheulog, Mountain Ash, CF45 3DX34, Brynheulog, Mountain Ash, CF45 3DX
• Sold Jul 2021£91,000 | 3 Bed House31, Hawthorn Terrace, Mountain Ash, CF45 3LX31, Hawthorn Terrace, Mountain Ash, CF45 3LX
• Sold Jul 2021£75,000 | 3 Bed House104, Penrhiwceiber Road, Mountain Ash, CF45 3SL104, Penrhiwceiber Road, Mountain Ash, CF45 3SL
• Sold Jan 2020£68,000 | 3 Bed House9, Tanycoed Street, Mountain Ash, CF45 3YH9, Tanycoed Street, Mountain Ash, CF45 3YH
• Sold Dec 2019£95,000 | 3 Bed House45, Glamorgan Street, Mountain Ash, CF45 3HX45, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Jan 2017£54,950 | 3 Bed House51, Glamorgan Street, Mountain Ash, CF45 3HX51, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Nov 2015£56,000 | 3 Bed House49, Glamorgan Street, Mountain Ash, CF45 3HX49, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Oct 2015£49,000 | 3 Bed House19, Brynheulog, Mountain Ash, CF45 3DX19, Brynheulog, Mountain Ash, CF45 3DX

Of the 109 addresses on Brynheulog, Mountain Ash, CF45, 18, Brynheulog, Mountain Ash comes out as the 18th largest and the 59th most expensive in our analysis of the public data.

It is also £50k less expensive than the average property across the CF45 district.

• Penrhiwceiber

  |

  600 m away
• Mountain Ash

  |

  1.6 km away
• Fernhill

  |

  2.8 km away

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