According to data from HM Land Registry, 33, Heol Isaf, Treharris sits on a plot of 359 m².

We have plot size data on 35 out of 35 other houses in the postcode and 33, Heol Isaf, Treharris sits on the 13th largest plot.

33, Heol Isaf, Treharris has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 16 Aug 2017.

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 HM Land Registry, 33, Heol Isaf, Treharris was last sold on 9th August 2018 for £192,500 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since August 2018, the market for similar properties has risen by 5.4%.

• Sold Aug 2018£192,500

According to the Land Registry and our network of Estate Agents, there have been 49 sales of properties similar to 33, Heol Isaf, Treharris within a radius of 1.2 kilometres since 2007.

The most recent example is 25, Tawel Fan, Treharris, CF46 6EH, a freehold house which sold for £208,000 on the 23rd October 2025.

Read more about house prices in CF46.

• Sold Oct 2025£208,000 | 3 Bed House25, Tawel Fan, Treharris, CF46 6EH25, Tawel Fan, Treharris, CF46 6EH
• Sold Apr 2025£240,000 | 4 Bed House8, Mountain Way, Treharris, CF46 6NY8, Mountain Way, Treharris, CF46 6NY
• Sold Mar 2025£220,000 | 3 Bed House10, Tawel Fan, Treharris, CF46 6EH10, Tawel Fan, Treharris, CF46 6EH
• Sold Nov 2024£285,000 | 3 Bed House66, High Street, Treharris, CF46 6HA66, High Street, Treharris, CF46 6HA
• Sold Jun 2024£258,000 | 3 Bed House47, Ffos Y Cerridden, Treharris, CF46 6HQ47, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold May 2024£375,000 | 4 Bed House3, Market Close, Treharris, CF46 6AZ3, Market Close, Treharris, CF46 6AZ
• Sold Nov 2023£208,000 | 3 Bed House1, Mountain Way, Treharris, CF46 6NY1, Mountain Way, Treharris, CF46 6NY
• Sold Mar 2023£250,000 | 3 Bed House17, Pine Tree Way, Treharris, CF46 6PA17, Pine Tree Way, Treharris, CF46 6PA
• Sold Dec 2022£267,500 | 3 Bed House37, Ffos Y Cerridden, Treharris, CF46 6HQ37, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold Jul 2022£332,500 | 4 Bed House39, Ashgrove Terrace, Treharris, CF46 6LS39, Ashgrove Terrace, Treharris, CF46 6LS
• Sold May 2022£311,000 | 4 Bed House23, Hawthorn Road, Treharris, CF46 6PB23, Hawthorn Road, Treharris, CF46 6PB
• Sold Mar 2020£152,500 | 4 Bed House14, Ffos Y Cerridden, Treharris, CF46 6HQ14, Ffos Y Cerridden, Treharris, CF46 6HQ
• Sold Nov 2018£120,000 | 4 Bed House2, Heol Isaf, Treharris, CF46 6NS2, Heol Isaf, Treharris, CF46 6NS
• Sold Oct 2018£139,000 | 3 Bed House29, Hawthorn Road, Treharris, CF46 6PB29, Hawthorn Road, Treharris, CF46 6PB
• Sold Apr 2018£182,000 | 4 Bed House31, Hawthorn Road, Treharris, CF46 6PB31, Hawthorn Road, Treharris, CF46 6PB
• Sold Apr 2017£220,000 | 4 Bed House93, Heol Fawr, Treharris, CF46 6NP93, Heol Fawr, Treharris, CF46 6NP
• Sold Feb 2017£171,500 | 3 Bed House53, Ashgrove Terrace, Treharris, CF46 6LS53, Ashgrove Terrace, Treharris, CF46 6LS
• Sold Nov 2014£152,000 | 4 Bed House14, Heol Isaf, Treharris, CF46 6NS14, Heol Isaf, Treharris, CF46 6NS
• Sold Jun 2009£135,000 | 3 Bed House21, Heol Uchaf, Treharris, CF46 6NT21, Heol Uchaf, Treharris, CF46 6NT
• Sold Aug 2007£158,000 | 3 Bed House16, Heol Isaf, Treharris, CF46 6NS16, Heol Isaf, Treharris, CF46 6NS

Heol Isaf, Nelson, Treharris, CF46 has a total of 35 addresses. According to our analysis of all the public data, 33, Heol Isaf, Treharris is the 10th largest and the 6th most expensive property on the street.

When compared to the postcode district it is £125k more expensive than the average property in CF46.

• Ystrad Mynach

  |

  2.7 km away
• Quakers Yard

  |

  3.4 km away
• Abercynon

  |

  3.4 km away

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