HM Land Registry records the plot of land for 6, Pentwyn Avenue, Mountain Ash as measuring 301 m².

That makes it the 4th largest plot in the postcode, where 41 of the 45 other houses have recorded plot data.

6, Pentwyn Avenue, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 16 Aug 2010.

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 6, Pentwyn Avenue, Mountain Ash completed on 16th December 2011 at £65,000 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 178.4% over the period since December 2011.

• Sold Dec 2011£65,000
• Sold Jun 2007£30,000

Since 2019 214 properties similar to 6, 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 22nd April 2026, was 10, Pentwyn Avenue, Mountain Ash, CF45 4YF, a freehold house which sold for £83,000.

Read more about house prices in CF45.

• Sold Apr 2026£83,000 | 3 Bed House10, Pentwyn Avenue, Mountain Ash, CF45 4YF10, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Sep 2025£75,000 | 3 Bed House7, Walsh Street, Mountain Ash, CF45 4YS7, Walsh Street, Mountain Ash, CF45 4YS
• Sold Jun 2025£59,000 | 3 Bed House2, Walsh Street, Mountain Ash, CF45 4YS2, Walsh Street, Mountain Ash, CF45 4YS
• Sold May 2025£117,500 | 3 Bed House24, Pentwyn Avenue, Mountain Ash, CF45 4YF24, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Dec 2024£100,000 | 3 Bed House7, Halswell Street, Mountain Ash, CF45 4YN7, Halswell Street, Mountain Ash, CF45 4YN
• Sold Nov 2024£80,000 | 3 Bed House60, Pentwyn Avenue, Mountain Ash, CF45 4YF60, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Oct 2024£130,000 | 3 Bed House20, Milbourne Street, Mountain Ash, CF45 4YL20, Milbourne Street, Mountain Ash, CF45 4YL
• Sold Oct 2024£115,000 | 3 Bed House74, Pentwyn Avenue, Mountain Ash, CF45 4YF74, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Sep 2024£70,000 | 3 Bed House15, Milbourne Street, Mountain Ash, CF45 4YL15, Milbourne Street, Mountain Ash, CF45 4YL
• Sold Jul 2023£85,000 | 3 Bed House1, Glamorgan Street, Mountain Ash, CF45 3HX1, Glamorgan Street, Mountain Ash, CF45 3HX
• Sold Oct 2022£114,995 | 3 Bed House133, Bryntirion, Mountain Ash, CF45 4EX133, Bryntirion, Mountain Ash, CF45 4EX
• Sold Jun 2022£145,000 | 3 Bed House92, Pentwyn Avenue, Mountain Ash, CF45 4YF92, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Apr 2021£98,000 | 3 Bed House66, Pentwyn Avenue, Mountain Ash, CF45 4YF66, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Mar 2021£75,000 | 3 Bed House56, Pentwyn Avenue, Mountain Ash, CF45 4YF56, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Sep 2020£30,000 | 3 Bed House52, Pentwyn Avenue, Mountain Ash, CF45 4YF52, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Oct 2019£64,000 | 3 Bed House19, Milbourne Street, Mountain Ash, CF45 4YL19, Milbourne Street, Mountain Ash, CF45 4YL
• Sold Sep 2019£52,000 | 3 Bed House25, Milbourne Street, Mountain Ash, CF45 4YL25, Milbourne Street, Mountain Ash, CF45 4YL
• Sold Sep 2019£45,000 | 3 Bed House88, Pentwyn Avenue, Mountain Ash, CF45 4YF88, Pentwyn Avenue, Mountain Ash, CF45 4YF
• Sold Feb 2019£60,000 | 3 Bed House9, Halswell Street, Mountain Ash, CF45 4YN9, Halswell Street, Mountain Ash, CF45 4YN
• Sold Feb 2019£30,000 | 3 Bed House1, Pentwyn Avenue, Mountain Ash, CF45 4YE1, Pentwyn Avenue, Mountain Ash, CF45 4YE

Of the 111 addresses on Pentwyn Avenue, Mountain Ash, CF45, 6, Pentwyn Avenue, Mountain Ash comes out as the 59th largest and the 32nd most expensive in our analysis of the public data.

It is also £51k 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.