Our Data Sources
18, Heol Islwyn, Treharris has no records in the Land Registry and a single entry in the EPC database dated July 2024.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 18, Heol Islwyn, Treharris would be worth £105,097, with a potential rental value of £747 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £93,086, with a rental value of £661 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
18, Heol Islwyn, Treharris has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 30 Jul 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Properties Sold Nearby
Land Registry records and our Estate Agent network show 652 sales within 930 metres of 18, Heol Islwyn, Treharris since 2007.
Most recently, 47, Ffos Y Cerridden, Treharris, CF46 6HQ, a freehold house, sold at £258,000 on the 6th June 2024.
Read more about house prices in CF46.
- Sold Jun 2024£258,000 | 3 Bed House47, Ffos Y Cerridden, Treharris, CF46 6HQ47, Ffos Y Cerridden, Treharris, CF46 6HQ
- Sold Oct 2023£205,000 | 3 Bed House32, Ffos Y Cerridden, Treharris, CF46 6HQ32, Ffos Y Cerridden, Treharris, CF46 6HQ
- Sold Oct 2022£292,500 | 4 Bed House25, Cae Llwyndu, Treharris, CF46 6HX25, Cae Llwyndu, Treharris, CF46 6HX
- Sold Feb 2022£186,000 | 3 Bed House98, Heol Tasker, Treharris, CF46 6JB98, Heol Tasker, Treharris, CF46 6JB
- Sold Aug 2021£190,000 | 3 Bed House106, Heol Tasker, Treharris, CF46 6JB106, Heol Tasker, Treharris, CF46 6JB
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £186,858, ranging from £81,906 to £428,288.
- 17 Heol Islwyn
2 Bed House | 7 m | Est. Value: £81,906
- 21 Heol Islwyn
3 Bed House | 33 m | Est. Value: £95,809
- 11 School Close
4 Bed House | 34 m | Est. Value: £403,588
- 10 School Close
4 Bed House | 38 m | Est. Value: £428,288
- 13 Heol Islwyn
3 Bed House | 38 m | Est. Value: £99,251
Location Comparison
Our analysis of the public data ranks 18, Heol Islwyn, Treharris as the 7th largest and the 7th most expensive of the 32 addresses on Heol Islwyn, Nelson, Treharris, CF46.
Against the CF46 postcode district average, it is £63k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Abercynon|2.7 km away
- Quakers Yard|2.7 km away
- Ystrad Mynach|3.4 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.





