HM Land Registry records the plot of land for 18, Williams Terrace, Treharris as measuring 123 m².

That makes it the 11th largest plot in the postcode, where 18 of the 20 other houses have recorded plot data.

18, Williams Terrace, Treharris has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 25 Mar 2026.

The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 18, Williams Terrace, Treharris completed on 26th September 2014 at £39,950 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 100.3% over the period since September 2014.

• Sold Sep 2014£39,950

Since 2021 272 properties similar to 18, Williams Terrace, Treharris have sold within a radius of 710 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 1st May 2026, was 9, Fell Street, Treharris, CF46 5HN, a freehold house which sold for £137,000.

Read more about house prices in CF46.

• Sold May 2026£137,000 | 3 Bed House9, Fell Street, Treharris, CF46 5HN9, Fell Street, Treharris, CF46 5HN
• Sold Dec 2025£125,000 | 3 Bed House61, Fell Street, Treharris, CF46 5HN61, Fell Street, Treharris, CF46 5HN
• Sold Jul 2025£107,950 | 3 Bed House44, Penn Street, Treharris, CF46 5HL44, Penn Street, Treharris, CF46 5HL
• Sold May 2025£92,000 | 3 Bed House45, Penn Street, Treharris, CF46 5HL45, Penn Street, Treharris, CF46 5HL
• Sold Apr 2025£84,000 | 3 Bed House19, Penn Street, Treharris, CF46 5HL19, Penn Street, Treharris, CF46 5HL
• Sold Apr 2025£75,000 | 3 Bed House6, Edward Street, Treharris, CF46 5LF6, Edward Street, Treharris, CF46 5LF
• Sold Apr 2025£90,000 | 3 Bed House20, Edward Street, Treharris, CF46 5LF20, Edward Street, Treharris, CF46 5LF
• Sold Sep 2024£84,000 | 3 Bed House43, Penn Street, Treharris, CF46 5HL43, Penn Street, Treharris, CF46 5HL
• Sold Aug 2024£100,000 | 3 Bed House7, Fell Street, Treharris, CF46 5HN7, Fell Street, Treharris, CF46 5HN
• Sold Aug 2024£76,000 | 3 Bed House16, Fell Street, Treharris, CF46 5HN16, Fell Street, Treharris, CF46 5HN
• Sold Jun 2024£142,500 | 3 Bed House1, Edward Street, Treharris, CF46 5LF1, Edward Street, Treharris, CF46 5LF
• Sold Nov 2023£68,000 | 3 Bed House19, Fell Street, Treharris, CF46 5HN19, Fell Street, Treharris, CF46 5HN
• Sold Nov 2023£140,000 | 3 Bed House47, Penn Street, Treharris, CF46 5HL47, Penn Street, Treharris, CF46 5HL
• Sold Sep 2023£74,000 | 3 Bed House22, Fell Street, Treharris, CF46 5HN22, Fell Street, Treharris, CF46 5HN
• Sold Jul 2023£71,000 | 3 Bed House21, Edward Street, Treharris, CF46 5LF21, Edward Street, Treharris, CF46 5LF
• Sold May 2023£120,000 | 3 Bed House68, Fell Street, Treharris, CF46 5HN68, Fell Street, Treharris, CF46 5HN
• Sold Aug 2022£103,000 | 3 Bed House50, Fell Street, Treharris, CF46 5HN50, Fell Street, Treharris, CF46 5HN
• Sold Apr 2022£105,000 | 3 Bed House2, Fell Street, Treharris, CF46 5HN2, Fell Street, Treharris, CF46 5HN
• Sold Oct 2021£86,000 | 3 Bed House52, Penn Street, Treharris, CF46 5HL52, Penn Street, Treharris, CF46 5HL
• Sold Apr 2021£107,500 | 3 Bed House65, Fell Street, Treharris, CF46 5HN65, Fell Street, Treharris, CF46 5HN

Of the 20 addresses on Williams Terrace, Treharris, CF46, 18, Williams Terrace, Treharris comes out as the 13th largest and the 13th most expensive in our analysis of the public data.

It is also £38k less expensive than the average property across the CF46 district.

• Quakers Yard

  |

  1.3 km away
• Abercynon

  |

  2.8 km away
• Merthyr Vale

  |

  3.2 km away

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