40, Heol Twyn Du, Merthyr Tydfil has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Oct 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 20 sales of comparable properties within 890 metres of 40, Heol Twyn Du, Merthyr Tydfil since 2007.

Most recently, 166, High Street, Merthyr Tydfil, CF48 2PH, a freehold house, sold at £50,000 on the 31st October 2025.

Read more about house prices in CF48.

• Sold Oct 2025£50,000 | 3 Bed House166, High Street, Merthyr Tydfil, CF48 2PH166, High Street, Merthyr Tydfil, CF48 2PH
• Sold Jun 2025£90,000 | 3 Bed House10, Heol Scwrfa, Merthyr Tydfil, CF48 1HE10, Heol Scwrfa, Merthyr Tydfil, CF48 1HE
• Sold Jun 2024£83,000 | 3 Bed House11, Heol Twyn Du, Merthyr Tydfil, CF48 1LU11, Heol Twyn Du, Merthyr Tydfil, CF48 1LU
• Sold Mar 2022£64,950 | 3 Bed House58, High Street, Merthyr Tydfil, CF48 2PH58, High Street, Merthyr Tydfil, CF48 2PH
• Sold Dec 2021£63,000 | 3 Bed House63, High Street, Merthyr Tydfil, CF48 2PL63, High Street, Merthyr Tydfil, CF48 2PL
• Sold Jun 2021£56,000 | 3 Bed House102, Twyn Carmel, Merthyr Tydfil, CF48 1PG102, Twyn Carmel, Merthyr Tydfil, CF48 1PG
• Sold May 2021£64,000 | 3 Bed House13, Heol Rhos Las, Merthyr Tydfil, CF48 1HF13, Heol Rhos Las, Merthyr Tydfil, CF48 1HF
• Sold Dec 2020£55,000 | 3 Bed House12, Heol Bryn Selu, Merthyr Tydfil, CF48 1LY12, Heol Bryn Selu, Merthyr Tydfil, CF48 1LY
• Sold Mar 2020£87,000 | 3 Bed House162, High Street, Merthyr Tydfil, CF48 2PH162, High Street, Merthyr Tydfil, CF48 2PH
• Sold Dec 2018£54,500 | 3 Bed House2, Heol Bryn Selu, Merthyr Tydfil, CF48 1LY2, Heol Bryn Selu, Merthyr Tydfil, CF48 1LY
• Sold Aug 2017£39,900 | 3 Bed House135, High Street, Merthyr Tydfil, CF48 2PL135, High Street, Merthyr Tydfil, CF48 2PL
• Sold Dec 2016£39,950 | 3 Bed House16, Heol Scwrfa, Merthyr Tydfil, CF48 1HE16, Heol Scwrfa, Merthyr Tydfil, CF48 1HE
• Sold Nov 2016£39,999 | 3 Bed House8, Heol Twyn Du, Merthyr Tydfil, CF48 1LU8, Heol Twyn Du, Merthyr Tydfil, CF48 1LU
• Sold Mar 2016£60,000 | 3 Bed House38, Heol Bryn Man, Merthyr Tydfil, CF48 1NE38, Heol Bryn Man, Merthyr Tydfil, CF48 1NE
• Sold Sep 2015£72,000 | 3 Bed House134, High Street, Merthyr Tydfil, CF48 2PL134, High Street, Merthyr Tydfil, CF48 2PL
• Sold Jul 2015£68,000 | 3 Bed House169, High Street, Merthyr Tydfil, CF48 2PH169, High Street, Merthyr Tydfil, CF48 2PH
• Sold Dec 2014£36,000 | 3 Bed House20, Heol Scwrfa, Merthyr Tydfil, CF48 1HE20, Heol Scwrfa, Merthyr Tydfil, CF48 1HE
• Sold Apr 2014£72,000 | 3 Bed House145, High Street, Merthyr Tydfil, CF48 2PL145, High Street, Merthyr Tydfil, CF48 2PL
• Sold Jul 2007£87,000 | 3 Bed House136, High Street, Merthyr Tydfil, CF48 2PL136, High Street, Merthyr Tydfil, CF48 2PL
• Sold Mar 2007£41,000 | 3 Bed House14, Heol Scwrfa, Merthyr Tydfil, CF48 1HE14, Heol Scwrfa, Merthyr Tydfil, CF48 1HE

Our analysis of the public data ranks 40, Heol Twyn Du, Merthyr Tydfil as the 27th largest and the 27th most expensive of the 34 addresses on Heol Twyn Du, Merthyr Tydfil, CF48.

Against the CF48 postcode district average, it is £80k less expensive than the typical property.

• Merthyr Tydfil

  |

  2.3 km away
• Pentre-Bach

  |

  4.6 km away
• Aberdare

  |

  5.2 km away

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