According to data from HM Land Registry, 17, Dover Street, Mountain Ash sits on a plot of 114 m².

We have plot size data on 23 out of 25 other houses in the postcode and 17, Dover Street, Mountain Ash sits on the 15th largest plot.

17, Dover Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 09 Apr 2009.

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

According to HM Land Registry, 17, Dover Street, Mountain Ash was last sold on 20th November 2009 for £65,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since November 2009, the market for similar properties has risen by 117.4%.

• Sold Nov 2009£65,000

According to the Land Registry and our network of Estate Agents, there have been 221 sales of properties similar to 17, Dover Street, Mountain Ash within a radius of 530 metres since 2015.

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

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 Jul 2025£49,000 | 3 Bed House49, Commercial Street, Mountain Ash, CF45 3PS49, Commercial Street, Mountain Ash, CF45 3PS
• Sold Jun 2025£132,500 | 3 Bed House28, Kingcraft Street, Mountain Ash, CF45 3LT28, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Apr 2025£129,950 | 3 Bed House38, Kingcraft Street, Mountain Ash, CF45 3LT38, Kingcraft Street, Mountain Ash, CF45 3LT
• Sold Feb 2025£122,000 | 3 Bed House21, Darran Road, Mountain Ash, CF45 3HT21, Darran Road, Mountain Ash, CF45 3HT
• 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 Oct 2023£88,500 | 3 Bed House54, Napier Street, Mountain Ash, CF45 3HW54, Napier Street, Mountain Ash, CF45 3HW
• Sold Apr 2023£80,000 | 3 Bed House12, Stream Street, Mountain Ash, CF45 3LL12, Stream Street, Mountain Ash, CF45 3LL
• 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£40,000 | 3 Bed House33, Dover Street, Mountain Ash, CF45 3HU33, 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 Oct 2017£70,000 | 3 Bed House2, Napier Street, Mountain Ash, CF45 3HW2, Napier Street, Mountain Ash, CF45 3HW
• Sold Sep 2017£37,000 | 3 Bed House33, Napier Street, Mountain Ash, CF45 3HW33, Napier Street, Mountain Ash, CF45 3HW
• Sold Aug 2017£48,000 | 3 Bed House28, Dover Street, Mountain Ash, CF45 3HU28, Dover Street, Mountain Ash, CF45 3HU
• Sold Jul 2015£60,000 | 3 Bed House39, Napier Street, Mountain Ash, CF45 3HW39, Napier Street, Mountain Ash, CF45 3HW

Dover Street, Mountain Ash, CF45 has a total of 48 addresses. According to our analysis of all the public data, 17, Dover Street, Mountain Ash is the 8th largest and the 13th most expensive property on the street.

When compared to the postcode district it is £41k less expensive than the average property in CF45.

• Mountain Ash

  |

  200 m away
• Fernhill

  |

  1.3 km away
• Penrhiwceiber

  |

  1.8 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.