HM Land Registry records the plot of land for 17, Aberpennar Street, Mountain Ash as measuring 116 m².

That makes it the 42nd largest plot in the postcode, where 45 of the 52 other houses have recorded plot data.

17, Aberpennar Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 24 Jun 2021.

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 17, Aberpennar Street, Mountain Ash completed on 10th September 2021 at £129,950 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 85.7% over the period since September 2021.

Since 2010 47 properties similar to 17, Aberpennar Street, Mountain Ash have sold within a radius of 610 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th June 2026, was 8, Hamilton Street, Mountain Ash, CF45 3RH, a freehold house which sold for £177,500.

Read more about house prices in CF45.

• Sold Jun 2026£177,500 | 4 Bed House8, Hamilton Street, Mountain Ash, CF45 3RH8, Hamilton Street, Mountain Ash, CF45 3RH
• Sold Apr 2026£130,000 | 4 Bed House9, Clarence Street, Mountain Ash, CF45 3BB9, Clarence Street, Mountain Ash, CF45 3BB
• Sold Dec 2025£130,000 | 4 Bed House76, Consort Street, Mountain Ash, CF45 3AU76, Consort Street, Mountain Ash, CF45 3AU
• Sold Nov 2025£157,000 | 4 Bed House38, Aberpennar Street, Mountain Ash, CF45 3LS38, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Sep 2025£142,000 | 4 Bed House33, Kingcraft Street, Mountain Ash, CF45 3LT33, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Mar 2025£86,000 | 3 Bed House23, Gwernifor Street, Mountain Ash, CF45 3NA23, Gwernifor Street, Mountain Ash, CF45 3NA
• Sold Oct 2024£130,000 | 4 Bed House23, Coplestone Street, Mountain Ash, CF45 3LY23, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2023£140,000 | 4 Bed House1, Aberpennar Street, Mountain Ash, CF45 3LS1, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Jul 2022£124,000 | 4 Bed House16, Coplestone Street, Mountain Ash, CF45 3LY16, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Apr 2022£93,000 | 4 Bed House10, Darran Road, Mountain Ash, CF45 3HT10, Darran Road, Mountain Ash, CF45 3HT
• Sold Apr 2022£145,000 | 4 Bed House19, Aberpennar Street, Mountain Ash, CF45 3LS19, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Feb 2022£138,000 | 4 Bed House36, Coplestone Street, Mountain Ash, CF45 3LY36, Coplestone Street, Mountain Ash, CF45 3LY
• Sold Jan 2022£160,000 | 4 Bed House57, Brynifor, Mountain Ash, CF45 3AB57, Brynifor, Mountain Ash, CF45 3AB
• Sold Dec 2021£140,000 | 4 Bed House2, Albert Street, Mountain Ash, CF45 3BA2, Albert Street, Mountain Ash, CF45 3BA
• Sold Jan 2020£100,000 | 4 Bed House32, Kingcraft Street, Mountain Ash, CF45 3LT32, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Dec 2017£102,000 | 4 Bed House31, Kingcraft Street, Mountain Ash, CF45 3LT31, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Jul 2017£111,000 | 4 Bed House25, Aberpennar Street, Mountain Ash, CF45 3LS25, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Sep 2015£92,000 | 3 Bed House12, Aberpennar Street, Mountain Ash, CF45 3LS12, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Dec 2012£109,950 | 4 Bed House18, Aberpennar Street, Mountain Ash, CF45 3LS18, Aberpennar Street, Mountain Ash, CF45 3LS
• Sold Oct 2010£85,000 | 4 Bed House11, Aberpennar Street, Mountain Ash, CF45 3LS11, Aberpennar Street, Mountain Ash, CF45 3LS

Of the 52 addresses on Aberpennar Street, Mountain Ash, CF45, 17, Aberpennar Street, Mountain Ash comes out as the 5th largest and the 5th most expensive in our analysis of the public data.

It is also £8k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  400 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

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