Our Data Sources
30, Heol Islwyn, Treharris has no records in the Land Registry and a single entry in the EPC database dated December 2015.
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 30, Heol Islwyn, Treharris would be worth £120,231, with a potential rental value of £808 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £106,490, with a rental value of £716 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
30, Heol Islwyn, Treharris has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 09 Dec 2015.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 14 sales of comparable properties within 950 metres of 30, Heol Islwyn, Treharris since 2007.
Most recently, 1, Thomas Street, Treharris, CF46 6NG, a freehold house, sold at £119,950 on the 22nd April 2025.
Read more about house prices in CF46.
- Sold Apr 2025£119,950 | 3 Bed House1, Thomas Street, Treharris, CF46 6NG1, Thomas Street, Treharris, CF46 6NG
- Sold Apr 2025£150,000 | 3 Bed House3, Thomas Street, Treharris, CF46 6NG3, Thomas Street, Treharris, CF46 6NG
- Sold Apr 2022£95,000 | 3 Bed House5, Ynys Las, Treharris, CF46 6LE5, Ynys Las, Treharris, CF46 6LE
- Sold Oct 2021£67,000 | 3 Bed House4, Thomas Street, Treharris, CF46 6NG4, Thomas Street, Treharris, CF46 6NG
- Sold Dec 2019£122,500 | 3 Bed House40, Wern Crescent, Treharris, CF46 6NE40, Wern Crescent, Treharris, CF46 6NE
Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Explore Nearby Properties
The surrounding properties have an average estimated value of £94,302, ranging from £81,906 to £113,841.
- 29 Heol Islwyn
3 Bed House | 15 m | Est. Value: £97,725
- 28 Heol Islwyn
3 Bed House | 23 m | Est. Value: £102,508
- 31 Heol Islwyn
3 Bed House | 26 m | Est. Value: £113,841
- 27 Heol Islwyn
3 Bed House | 35 m | Est. Value: £101,749
- 2 Heol Islwyn
2 Bed House | 39 m | Est. Value: £86,669
Location Comparison
Our analysis of the public data ranks 30, Heol Islwyn, Treharris as the largest and the most expensive of the 32 addresses on Heol Islwyn, Nelson, Treharris, CF46.
Against the CF46 postcode district average, it is £48k less expensive than the typical property.
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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.





