Our Data Sources
21, Clos Trefin, Blackwood has no records in the the Land Registry and a single entry in the EPC database dated September 2025.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 21, Clos Trefin, Blackwood, we estimate a market value of £157,183 and a rental value of £981 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £139,219 and £868 per month respectively.
Energy Efficiency
21, Clos Trefin, Blackwood has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Sep 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler with radiators and underfloor heating, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 30 properties similar to 21, Clos Trefin, Blackwood have sold within a radius of 720 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 29th August 2025, was 20, Brynteg Avenue, Blackwood, NP12 2BY, a freehold house which sold for £146,600.
Read more about house prices in NP12.
- Sold Aug 2025£146,600 | 3 Bed House20, Brynteg Avenue, Blackwood, NP12 2BY20, Brynteg Avenue, Blackwood, NP12 2BY
- Sold Jun 2025£157,000 | 3 Bed House3, Gelligroes Road, Blackwood, NP12 2JU3, Gelligroes Road, Blackwood, NP12 2JU
- Sold Aug 2022£167,950 | 3 Bed House6, Newport Road, Blackwood, NP12 2JN6, Newport Road, Blackwood, NP12 2JN
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Of the 29 addresses on Clos Trefin, Pontllanfraith, Blackwood, NP12, 21, Clos Trefin, Blackwood comes out as the 14th largest and the 14th most expensive in our analysis of the public data.
It is also £40k less expensive than the average property across the NP12 district.
More reading links
Schools Nearby
Public Transport Nearby
- Hengoed|2.4 km away
- Pengam|3.4 km away
- Newbridge|3.7 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












