30, Stream Street, Mountain Ash occupies a 124 m² plot as recorded by HM Land Registry.

Of the 26 other houses in this postcode, 22 have recorded plot sizes, and this one ranks as the 5th largest.

30, Stream Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Feb 2025.

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

Land Registry records and our Estate Agent network show 68 sales of comparable properties within 590 metres of 30, Stream Street, Mountain Ash since 2018.

Most recently, 32, Napier Street, Mountain Ash, CF45 3HW, a freehold house, sold at £60,000 on the 3rd November 2025.

Read more about house prices in CF45.

• Sold Nov 2025£60,000 | 3 Bed House32, Napier Street, Mountain Ash, CF45 3HW32, Napier Street, Mountain Ash, CF45 3HW
• Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
• Sold Feb 2025£84,000 | 3 Bed House110, High Street, Mountain Ash, CF45 3LN110, High Street, Mountain Ash, CF45 3LN
• Sold Jul 2024£72,000 | 3 Bed House20, Stream Street, Mountain Ash, CF45 3LL20, Stream Street, Mountain Ash, CF45 3LL
• Sold Jul 2024£63,000 | 3 Bed House28, Napier Street, Mountain Ash, CF45 3HW28, Napier Street, Mountain Ash, CF45 3HW
• Sold Jul 2024£76,000 | 3 Bed House72, High Street, Mountain Ash, CF45 3LD72, High Street, Mountain Ash, CF45 3LD
• Sold Jun 2024£75,000 | 3 Bed House16, Stream Street, Mountain Ash, CF45 3LL16, Stream Street, Mountain Ash, CF45 3LL
• Sold Feb 2024£89,000 | 3 Bed House24, Napier Street, Mountain Ash, CF45 3HW24, Napier Street, Mountain Ash, CF45 3HW
• Sold Oct 2023£78,500 | 3 Bed House30, Napier Street, Mountain Ash, CF45 3HW30, Napier Street, Mountain Ash, CF45 3HW
• Sold Aug 2023£100,000 | 3 Bed House57, Napier Street, Mountain Ash, CF45 3HW57, Napier Street, Mountain Ash, CF45 3HW
• Sold Apr 2023£108,000 | 3 Bed House13, Stream Street, Mountain Ash, CF45 3LL13, Stream Street, Mountain Ash, CF45 3LL
• Sold Jul 2022£55,000 | 3 Bed House32, Dover Street, Mountain Ash, CF45 3HU32, Dover Street, Mountain Ash, CF45 3HU
• Sold Mar 2022£80,000 | 3 Bed House26, Stream Street, Mountain Ash, CF45 3LL26, Stream Street, Mountain Ash, CF45 3LL
• Sold Apr 2021£70,000 | 3 Bed House96, High Street, Mountain Ash, CF45 3LN96, High Street, Mountain Ash, CF45 3LN
• Sold Mar 2021£72,500 | 3 Bed House36, Napier Street, Mountain Ash, CF45 3HW36, Napier Street, Mountain Ash, CF45 3HW
• Sold Dec 2020£66,000 | 3 Bed House123, High Street, Mountain Ash, CF45 3LN123, High Street, Mountain Ash, CF45 3LN
• Sold Nov 2020£54,000 | 3 Bed House15, Stream Street, Mountain Ash, CF45 3LL15, Stream Street, Mountain Ash, CF45 3LL
• Sold Jun 2019£54,500 | 3 Bed House18, Stream Street, Mountain Ash, CF45 3LL18, Stream Street, Mountain Ash, CF45 3LL
• Sold Aug 2018£61,500 | 3 Bed House14, Stream Street, Mountain Ash, CF45 3LL14, Stream Street, Mountain Ash, CF45 3LL
• Sold Apr 2018£72,000 | 3 Bed House90, High Street, Mountain Ash, CF45 3LN90, High Street, Mountain Ash, CF45 3LN

Our analysis of the public data ranks 30, Stream Street, Mountain Ash as the 22nd largest and the 25th most expensive of the 26 addresses on Stream Street, Mountain Ash, CF45.

Against the CF45 postcode district average, it is £71k less expensive than the typical property.

• Mountain Ash

  |

  300 m away
• Fernhill

  |

  1.2 km away
• Penrhiwceiber

  |

  1.9 km away

Environment Agency data suggests this area has a Very Low risk of flooding.