Our Data Sources
18, Clark Street, Treorchy has 31 entries in the Land Registry, most recently in March 2025 and a single entry in the EPC database dated January 2025.
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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
In very good condition, we estimate 18, Clark Street, Treorchy would be worth £174,322, with a potential rental value of £956 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £154,400, with a rental value of £847 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
18, Clark Street, Treorchy occupies a 120 m2 plot as recorded by HM Land Registry.
Of the 57 other houses in this postcode, 51 have recorded plot sizes, and this one ranks as the 40th largest.
Energy Efficiency
18, Clark Street, Treorchy has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 Jan 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
18, Clark Street, Treorchy last changed hands on 21st March 2025, selling for £150,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 3 times since 1995.
The market for similar properties has dropped by 12.9% since March 2025.
- Sold Mar 2025£150,000
- Sold Jun 2017£98,000
- Sold Jul 1997£46,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 146 sales of comparable properties within 620 metres of 18, Clark Street, Treorchy since 2017.
Most recently, 1, Dyfodwg Street, Treorchy, CF42 6NN, a freehold house, sold at £190,250 on the 26th May 2026.
Read more about house prices in CF42.
- Sold May 2026£190,250 | 4 Bed House1, Dyfodwg Street, Treorchy, CF42 6NN1, Dyfodwg Street, Treorchy, CF42 6NN
- Sold Jan 2026£100,000 | 3 Bed House70, Dyfodwg Street, Treorchy, CF42 6NL70, Dyfodwg Street, Treorchy, CF42 6NL
- Sold Nov 2025£120,000 | 4 Bed House65, Chepstow Road, Treorchy, CF42 6UU65, Chepstow Road, Treorchy, CF42 6UU
- Sold Aug 2025£142,000 | 3 Bed House31, Dyfodwg Street, Treorchy, CF42 6NN31, Dyfodwg Street, Treorchy, CF42 6NN
- Sold Aug 2025£133,500 | 3 Bed House18, Cardiff Street, Treorchy, CF42 6BG18, Cardiff Street, Treorchy, CF42 6BG
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 £153,779, ranging from £142,586 to £160,344.
- 19 Clark Street
3 Bed House | 5 m | Est. Value: £160,344
- 16 Clark Street
3 Bed House | 10 m | Est. Value: £151,730
- 14 Clark Street
3 Bed House | 20 m | Est. Value: £148,761
- 22 Clark Street
3 Bed House | 22 m | Est. Value: £155,399
- 40 Clark Street
3 Bed House | 23 m | Est. Value: £144,964
Location Comparison
Our analysis of the public data ranks 18, Clark Street, Treorchy as the 5th largest and the 5th most expensive of the 57 addresses on Clark Street, Treorchy, CF42.
Against the CF42 postcode district average, it is £12k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Treorchy|500 m away
- Ynyswen|900 m away
- Treherbert|2.2 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.












