HM Land Registry records the plot of land for 40, Dover Street, Mountain Ash as measuring 131 m².

That makes it the 4th largest plot in the postcode, where 23 of the 25 other houses have recorded plot data.

40, Dover Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 06 Aug 2025.

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

Since 2007 26 properties similar to 40, 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 2nd February 2026, was 32, High Street, Mountain Ash, CF45 3PE, a freehold house which sold for £53,000.

Read more about house prices in CF45.

• Sold Feb 2026£53,000 | 3 Bed House32, High Street, Mountain Ash, CF45 3PE32, High Street, Mountain Ash, CF45 3PE
• Sold Oct 2024£67,000 | 3 Bed House20, Chancery Lane, Mountain Ash, CF45 3NW20, Chancery Lane, Mountain Ash, CF45 3NW
• Sold Aug 2024£30,000 | 3 Bed House40, High Street, Mountain Ash, CF45 3PE40, High Street, Mountain Ash, CF45 3PE
• 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£39,950 | 3 Bed House48, Commercial Street, Mountain Ash, CF45 3PW48, Commercial Street, Mountain Ash, CF45 3PW
• Sold May 2023£68,000 | 3 Bed House44, Commercial Street, Mountain Ash, CF45 3PW44, Commercial Street, Mountain Ash, CF45 3PW
• Sold Apr 2022£76,250 | 3 Bed House46, Commercial Street, Mountain Ash, CF45 3PW46, Commercial Street, Mountain Ash, CF45 3PW
• Sold Apr 2022£95,955 | 3 Bed House5, Graig Street, Mountain Ash, CF45 3PD5, Graig Street, Mountain Ash, CF45 3PD
• Sold Apr 2021£70,000 | 3 Bed House96, High Street, Mountain Ash, CF45 3LN96, High Street, Mountain Ash, CF45 3LN
• Sold Apr 2021£73,000 | 3 Bed House14, Chancery Lane, Mountain Ash, CF45 3NW14, Chancery Lane, Mountain Ash, CF45 3NW
• 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 May 2020£62,000 | 3 Bed House73, High Street, Mountain Ash, CF45 3LD73, High Street, Mountain Ash, CF45 3LD
• Sold Feb 2019£54,000 | 3 Bed House3, Foundry Terrace, Mountain Ash, CF45 3HH3, Foundry Terrace, Mountain Ash, CF45 3HH
• Sold Jul 2018£39,999 | 3 Bed House34, High Street, Mountain Ash, CF45 3PE34, High Street, Mountain Ash, CF45 3PE
• Sold Mar 2017£38,000 | 3 Bed House121, High Street, Mountain Ash, CF45 3LN121, High Street, Mountain Ash, CF45 3LN
• Sold Feb 2014£32,000 | 3 Bed House85, High Street, Mountain Ash, CF45 3LN85, High Street, Mountain Ash, CF45 3LN
• Sold Sep 2009£40,000 | 3 Bed House106, High Street, Mountain Ash, CF45 3LN106, High Street, Mountain Ash, CF45 3LN
• Sold Oct 2007£59,950 | 3 Bed House100, High Street, Mountain Ash, CF45 3LN100, High Street, Mountain Ash, CF45 3LN

Of the 48 addresses on Dover Street, Mountain Ash, CF45, 40, Dover Street, Mountain Ash comes out as the 38th largest and the 43rd most expensive in our analysis of the public data.

It is also £82k 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.