HM Land Registry records the plot of land for 20, Dover Street, Mountain Ash as measuring 127 m².

That makes it the 5th largest plot in the postcode, where 23 of the 25 other houses have recorded plot data.

The most recent sale of 20, Dover Street, Mountain Ash completed on 1st May 2007 at £75,790 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 3 times.

Values of comparable properties have risen by 90.1% over the period since May 2007.

• Sold May 2007£75,790
• Sold Apr 2005£58,500
• Sold Aug 2002£33,500

Since 2017 245 properties similar to 20, Dover Street, Mountain Ash have sold within a radius of 530 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 7th November 2025, was 81, Duffryn Street, Mountain Ash, CF45 3HR, a freehold house which sold for £115,000.

Read more about house prices in CF45.

• Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Sep 2025£112,000 | 3 Bed House31, Napier Street, Mountain Ash, CF45 3HW31, Napier Street, Mountain Ash, CF45 3HW
• Sold Jan 2025£81,500 | 3 Bed House2, Cliff Street, Mountain Ash, CF45 3LE2, Cliff Street, Mountain Ash, CF45 3LE
• Sold Dec 2024£85,000 | 3 Bed House55, Napier Street, Mountain Ash, CF45 3HW55, Napier Street, Mountain Ash, CF45 3HW
• Sold Oct 2024£55,000 | 3 Bed House39, Dover Street, Mountain Ash, CF45 3HU39, Dover Street, Mountain Ash, CF45 3HU
• Sold Mar 2024£119,000 | 3 Bed House45, Napier Street, Mountain Ash, CF45 3HW45, Napier Street, Mountain Ash, CF45 3HW
• Sold Oct 2023£88,500 | 3 Bed House54, Napier Street, Mountain Ash, CF45 3HW54, Napier Street, Mountain Ash, CF45 3HW
• Sold Aug 2023£60,000 | 3 Bed House7, Cliff Street, Mountain Ash, CF45 3LE7, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jul 2023£85,000 | 3 Bed House82, Duffryn Street, Mountain Ash, CF45 3HR82, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Apr 2023£80,000 | 3 Bed House12, Stream Street, Mountain Ash, CF45 3LL12, Stream Street, Mountain Ash, CF45 3LL
• Sold Feb 2023£95,000 | 3 Bed House14, Cliff Street, Mountain Ash, CF45 3LE14, Cliff Street, Mountain Ash, CF45 3LE
• Sold Jul 2022£87,500 | 3 Bed House35, Napier Street, Mountain Ash, CF45 3HW35, Napier Street, Mountain Ash, CF45 3HW
• Sold Mar 2021£78,000 | 3 Bed House73, Duffryn Street, Mountain Ash, CF45 3HR73, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Feb 2021£68,000 | 3 Bed House58, Duffryn Street, Mountain Ash, CF45 3HR58, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Dec 2019£40,600 | 3 Bed House79, Duffryn Street, Mountain Ash, CF45 3HR79, Duffryn Street, Mountain Ash, CF45 3HR
• Sold Dec 2019£40,000 | 3 Bed House33, Dover Street, Mountain Ash, CF45 3HU33, Dover Street, Mountain Ash, CF45 3HU
• Sold Jul 2019£97,000 | 3 Bed House19, Stream Street, Mountain Ash, CF45 3LL19, Stream Street, Mountain Ash, CF45 3LL
• Sold Mar 2019£58,000 | 3 Bed House25, Dover Street, Mountain Ash, CF45 3HU25, Dover Street, Mountain Ash, CF45 3HU
• Sold Feb 2019£66,000 | 3 Bed House15, Dover Street, Mountain Ash, CF45 3HU15, Dover Street, Mountain Ash, CF45 3HU
• Sold Sep 2017£37,000 | 3 Bed House33, Napier Street, Mountain Ash, CF45 3HW33, Napier Street, Mountain Ash, CF45 3HW

Of the 48 addresses on Dover Street, Mountain Ash, CF45, 20, Dover Street, Mountain Ash comes out as the 15th largest and the 22nd most expensive in our analysis of the public data.

It is also £45k less expensive than the average property across the CF45 district.

• Mountain Ash

  |

  200 m away
• Fernhill

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  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

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