HM Land Registry records the plot of land for 18, Pentwyn Avenue, Mountain Ash as measuring 431 m².

That makes it the largest plot in the postcode, where 41 of the 45 other houses have recorded plot data.

18, Pentwyn Avenue, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 01 Oct 2022.

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 18, Pentwyn Avenue, Mountain Ash completed on 6th February 2009 at £77,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 201.4% over the period since February 2009.

• Sold Feb 2009£77,000
• Sold Nov 2004£53,000

Since 2007 37 properties similar to 18, Pentwyn Avenue, Mountain Ash have sold within a radius of 1.4 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 5th March 2025, was 17, Penrhiwceiber Road, Mountain Ash, CF45 3SP, a freehold house which sold for £144,000.

Read more about house prices in CF45.

• Sold Mar 2025£144,000 | 4 Bed House17, Penrhiwceiber Road, Mountain Ash, CF45 3SP17, Penrhiwceiber Road, Mountain Ash, CF45 3SP
• Sold May 2023£130,000 | 4 Bed House14, Glasbrook Terrace, Mountain Ash, CF45 3SY14, Glasbrook Terrace, Mountain Ash, CF45 3SY
• Sold Mar 2023£145,000 | 4 Bed House11, Cynon Terrace, Mountain Ash, CF45 3SU11, Cynon Terrace, Mountain Ash, CF45 3SU
• Sold Oct 2022£80,000 | 4 Bed House52, Church Street, Mountain Ash, CF45 3YB52, Church Street, Mountain Ash, CF45 3YB
• Sold Dec 2021£120,000 | 3 Bed House1, Cynon Terrace, Mountain Ash, CF45 3SU1, Cynon Terrace, Mountain Ash, CF45 3SU
• Sold Nov 2021£88,500 | 3 Bed House10, Dillington Terrace, Mountain Ash, CF45 3NX10, Dillington Terrace, Mountain Ash, CF45 3NX
• Sold Sep 2021£115,000 | 4 Bed House2, Halswell Street, Mountain Ash, CF45 4YN2, Halswell Street, Mountain Ash, CF45 4YN
• Sold Jul 2021£65,000 | 4 Bed House25, Railway Terrace, Mountain Ash, CF45 3ST25, Railway Terrace, Mountain Ash, CF45 3ST
• Sold Oct 2020£63,000 | 4 Bed House7, Commercial Place, Mountain Ash, CF45 4YR7, Commercial Place, Mountain Ash, CF45 4YR
• Sold Oct 2020£90,000 | 3 Bed House5, Commercial Place, Mountain Ash, CF45 4YR5, Commercial Place, Mountain Ash, CF45 4YR
• Sold Oct 2019£100,000 | 4 Bed House9, Main Road, Mountain Ash, CF45 4YH9, Main Road, Mountain Ash, CF45 4YH
• Sold Mar 2019£100,000 | 4 Bed House3, Dillington Terrace, Mountain Ash, CF45 3NX3, Dillington Terrace, Mountain Ash, CF45 3NX
• Sold Nov 2018£60,000 | 4 Bed House4, Pentwyn Avenue, Mountain Ash, CF45 4YF4, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Mar 2018£45,000 | 4 Bed House58, Pentwyn Avenue, Mountain Ash, CF45 4YF58, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Nov 2017£87,000 | 3 Bed House10, Station Terrace, Mountain Ash, CF45 3SS10, Station Terrace, Mountain Ash, CF45 3SS
• Sold Aug 2016£79,950 | 3 Bed House44, Rheola Street, Mountain Ash, CF45 3TB44, Rheola Street, Mountain Ash, CF45 3TB
• Sold Sep 2015£80,000 | 4 Bed House4, Sunnyside, Mountain Ash, CF45 4DJ4, Sunnyside, Mountain Ash, CF45 4DJ
• Sold Jun 2015£51,000 | 4 Bed House50, Pentwyn Avenue, Mountain Ash, CF45 4YF50, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Sep 2012£35,000 | 4 Bed House44, Pentwyn Avenue, Mountain Ash, CF45 4YF44, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Nov 2007£110,000 | 4 Bed House7, Sunnyside, Mountain Ash, CF45 4DJ7, Sunnyside, Mountain Ash, CF45 4DJ

Of the 111 addresses on Pentwyn Avenue, Mountain Ash, CF45, 18, Pentwyn Avenue, Mountain Ash comes out as the 7th largest and the most expensive in our analysis of the public data.

It is also £19k less expensive than the average property across the CF45 district.

• Penrhiwceiber

  |

  1.0 km away
• Quakers Yard

  |

  2.2 km away
• Mountain Ash

  |

  2.7 km away

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