HM Land Registry records the plot of land for 18, Mary Street, Merthyr Tydfil as measuring 107 m².

That makes it the 15th largest plot in the postcode, where 25 of the 30 other houses have recorded plot data.

18, Mary Street, Merthyr Tydfil has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 27 Feb 2013.

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

The most recent sale of 18, Mary Street, Merthyr Tydfil completed on 16th December 2021 at £68,500 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 21.7% over the period since December 2021.

Since 2019 197 properties similar to 18, Mary Street, Merthyr Tydfil have sold within a radius of 510 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 20th May 2026, was 47, Gilfach Cynon, Merthyr Tydfil, CF47 0PG, a freehold house which sold for £130,000.

Read more about house prices in CF47.

• Sold May 2026£130,000 | 3 Bed House47, Gilfach Cynon, Merthyr Tydfil, CF47 0PG47, Gilfach Cynon, Merthyr Tydfil, CF47 0PG
• Sold Dec 2025£90,000 | 3 Bed House11, Mary Street, Merthyr Tydfil, CF47 0PY11, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Nov 2025£172,000 | 3 Bed House17, Mary Street, Merthyr Tydfil, CF47 0PY17, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Aug 2025£110,000 | 3 Bed House66, Twynyrodyn Road, Merthyr Tydfil, CF47 0PS66, Twynyrodyn Road, Merthyr Tydfil, CF47 0PS
• Sold Jul 2025£117,000 | 3 Bed House3, Hampton Street, Merthyr Tydfil, CF47 0RR3, Hampton Street, Merthyr Tydfil, CF47 0RR
• Sold Jun 2025£115,000 | 3 Bed House23, Primrose Hill, Merthyr Tydfil, CF47 0TF23, Primrose Hill, Merthyr Tydfil, CF47 0TF
• Sold Mar 2025£4,000 | 3 Bed House16, Mary Street, Merthyr Tydfil, CF47 0PY16, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Jan 2025£155,000 | 3 Bed House3, Primrose Hill, Merthyr Tydfil, CF47 0TF3, Primrose Hill, Merthyr Tydfil, CF47 0TF
• Sold Sep 2024£115,000 | 3 Bed House22, Hampton Street, Merthyr Tydfil, CF47 0RR22, Hampton Street, Merthyr Tydfil, CF47 0RR
• Sold Jul 2024£105,000 | 3 Bed House27, Mary Street, Merthyr Tydfil, CF47 0RA27, Mary Street, Merthyr Tydfil, CF47 0RA
• Sold Jan 2024£120,000 | 3 Bed House39, Gilfach Cynon, Merthyr Tydfil, CF47 0PG39, Gilfach Cynon, Merthyr Tydfil, CF47 0PG
• Sold Jan 2024£10,000 | 3 Bed House27, William Street, Merthyr Tydfil, CF47 0RG27, William Street, Merthyr Tydfil, CF47 0RG
• Sold Dec 2023£95,000 | 3 Bed House9, Mary Street, Merthyr Tydfil, CF47 0PY9, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Aug 2023£98,000 | 3 Bed House26, Bryn Street, Merthyr Tydfil, CF47 0TG26, Bryn Street, Merthyr Tydfil, CF47 0TG
• Sold Aug 2023£110,000 | 3 Bed House6, Hampton Street, Merthyr Tydfil, CF47 0RR6, Hampton Street, Merthyr Tydfil, CF47 0RR
• Sold Jun 2023£71,000 | 3 Bed House5, Hampton Street, Merthyr Tydfil, CF47 0RR5, Hampton Street, Merthyr Tydfil, CF47 0RR
• Sold Jul 2022£79,995 | 3 Bed House41, Mary Street, Merthyr Tydfil, CF47 0PY41, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Feb 2022£130,000 | 3 Bed House8, Hampton Street, Merthyr Tydfil, CF47 0RR8, Hampton Street, Merthyr Tydfil, CF47 0RR
• Sold Oct 2020£60,000 | 3 Bed House48, Mary Street, Merthyr Tydfil, CF47 0PY48, Mary Street, Merthyr Tydfil, CF47 0PY
• Sold Jan 2019£60,500 | 3 Bed House29, Mary Street, Merthyr Tydfil, CF47 0RA29, Mary Street, Merthyr Tydfil, CF47 0RA

Of the 45 addresses on Mary Street, Merthyr Tydfil, CF47, 18, Mary Street, Merthyr Tydfil comes out as the 26th largest and the 23rd most expensive in our analysis of the public data.

It is also £22k less expensive than the average property across the CF47 district.

• Merthyr Tydfil

  |

  400 m away
• Pentre-Bach

  |

  2.1 km away
• Troed-y-rhiw

  |

  3.8 km away

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