According to data from HM Land Registry, 5, Mary Street, Mountain Ash sits on a plot of 160 m².

We have plot size data on 40 out of 47 other houses in the postcode and 5, Mary Street, Mountain Ash sits on the 14th largest plot.

5, Mary Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 22 Oct 2008.

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 the Land Registry and our network of Estate Agents, there have been 102 sales of properties similar to 5, Mary Street, Mountain Ash within a radius of 720 metres since 2012.

The most recent example is 9, Clarence Street, Mountain Ash, CF45 3BB, a freehold house which sold for £130,000 on the 17th April 2026.

Read more about house prices in CF45.

• 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 Dec 2025£130,000 | 3 Bed House11, Clarence Street, Mountain Ash, CF45 3BB11, Clarence Street, Mountain Ash, CF45 3BB
• Sold Dec 2025£73,500 | 3 Bed House101, Penrhiwceiber Road, Mountain Ash, CF45 3SF101, Penrhiwceiber Road, Mountain Ash, CF45 3SF
• Sold Nov 2025£108,000 | 3 Bed House111, Woodfield Terrace, Mountain Ash, CF45 3UT111, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Nov 2025£120,000 | 3 Bed House100, Woodfield Terrace, Mountain Ash, CF45 3UT100, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold Sep 2025£130,000 | 3 Bed House14, Oakland Street, Mountain Ash, CF45 3AL14, Oakland Street, Mountain Ash, CF45 3AL
• Sold Jun 2025£98,000 | 3 Bed House96, Clarence Street, Mountain Ash, CF45 3BD96, Clarence Street, Mountain Ash, CF45 3BD
• Sold Mar 2025£76,000 | 3 Bed House1, Glyngwyn Street, Mountain Ash, CF45 3AF1, Glyngwyn Street, Mountain Ash, CF45 3AF
• Sold Nov 2024£140,000 | 4 Bed House20, Harcourt Terrace, Mountain Ash, CF45 3SD20, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Sep 2024£158,000 | 3 Bed House23, Lower Fforest Level, Mountain Ash, CF45 4HP23, Lower Fforest Level, Mountain Ash, CF45 4HP
• Sold Jun 2024£47,000 | 3 Bed House40, Thomas Street, Mountain Ash, CF45 3BU40, Thomas Street, Mountain Ash, CF45 3BU
• Sold Dec 2023£18,000 | 4 Bed House1A, Thomas Street, Mountain Ash, CF45 3BU1A, Thomas Street, Mountain Ash, CF45 3BU
• Sold Jun 2023£147,500 | 3 Bed HouseBryncerdyn Villa, Woodfield Terrace, Mountain Ash, CF45 3UTBryncerdyn Villa, Woodfield Terrace, Mountain Ash, CF45 3UT
• Sold May 2023£115,000 | 3 Bed House40, Oakland Street, Mountain Ash, CF45 3AL40, Oakland Street, Mountain Ash, CF45 3AL
• Sold Oct 2021£105,000 | 3 Bed House16, Consort Street, Mountain Ash, CF45 3AY16, Consort Street, Mountain Ash, CF45 3AY
• Sold Sep 2021£99,000 | 3 Bed House5, Harcourt Terrace, Mountain Ash, CF45 3SD5, Harcourt Terrace, Mountain Ash, CF45 3SD
• Sold Sep 2017£62,750 | 3 Bed House15, Mary Street, Mountain Ash, CF45 4HH15, Mary Street, Mountain Ash, CF45 4HH
• Sold Apr 2017£71,500 | 3 Bed House63, Cardiff Road, Mountain Ash, CF45 4HD63, Cardiff Road, Mountain Ash, CF45 4HD
• Sold Nov 2012£91,000 | 3 Bed House1 Newton Villas, John Street, Mountain Ash, CF45 4HW1 Newton Villas, John Street, Mountain Ash, CF45 4HW

Mary Street, Mountain Ash, CF45 has a total of 47 addresses. According to our analysis of all the public data, 5, Mary Street, Mountain Ash is the 3rd largest and the 2nd most expensive property on the street.

When compared to the postcode district it is £20k less expensive than the average property in CF45.

• Mountain Ash

  |

  600 m away
• Penrhiwceiber

  |

  1.1 km away
• Fernhill

  |

  2.1 km away

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