Our Data Sources
21, Bontnewydd Terrace, Treharris has 21 entries in the Land Registry , most recently in August 2020 and a single entry in the EPC database dated June 2020.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 21, Bontnewydd Terrace, Treharris would be worth £148,257, with a potential rental value of £891 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £131,314, with a rental value of £789 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
21, Bontnewydd Terrace, Treharris occupies a 130 m2 plot as recorded by HM Land Registry.
Of the 43 other houses in this postcode, 38 have recorded plot sizes, and this one ranks as the 5th largest.
Energy Efficiency
21, Bontnewydd Terrace, Treharris has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 19 Jun 2020.
The property is connected to mains gas and has partial double glazing. It is heated using Room heaters, mains gas.
Sold Prices
21, Bontnewydd Terrace, Treharris last changed hands on 25th August 2020, selling for £76,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 24.2% since August 2020.
- Sold Aug 2020£76,000
- Sold Jan 1998£29,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 203 sales of comparable properties within 850 metres of 21, Bontnewydd Terrace, Treharris across the last 2 years.
Most recently, 63, High Street, Treharris, CF46 6AD, a freehold house, sold at £151,000 on the 27th October 2025.
Read more about house prices in CF46.
- Sold Oct 2025£151,000 | 3 Bed House63, High Street, Treharris, CF46 6AD63, High Street, Treharris, CF46 6AD
- Sold Oct 2025£115,000 | 3 Bed House12, Bontnewydd Terrace, Treharris, CF46 6AF12, Bontnewydd Terrace, Treharris, CF46 6AF
- Sold Dec 2024£167,500 | 3 Bed House26, Bontnewydd Terrace, Treharris, CF46 6AF26, Bontnewydd Terrace, Treharris, CF46 6AF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 21, Bontnewydd Terrace, Treharris as the 42nd largest and the 41st most expensive of the 43 addresses on Bontnewydd Terrace, Trelewis, Treharris, CF46.
Against the CF46 postcode district average, it is £19k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Quakers Yard|1.9 km away
- Abercynon|3.2 km away
- Merthyr Vale|3.5 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












