Our Data Sources
3, Clas Gwernifor, Mountain Ash has no records in the Land Registry and a single entry in the EPC database dated August 2018.
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
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 3, Clas Gwernifor, Mountain Ash, we estimate a market value of £134,624 and a rental value of £859 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £119,239 and £761 per month respectively.
Energy Efficiency
3, Clas Gwernifor, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 09 Aug 2018.
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
Since 2020 252 properties similar to 3, Clas Gwernifor, Mountain Ash have sold within a radius of 560 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 29th January 2026, was 62, Cardiff Road, Mountain Ash, CF45 4HD, a freehold house which sold for £114,950.
Read more about house prices in CF45.
- Sold Jan 2026£114,950 | 3 Bed House62, Cardiff Road, Mountain Ash, CF45 4HD62, Cardiff Road, Mountain Ash, CF45 4HD
- Sold Jan 2026£125,000 | 3 Bed House67, Brynifor, Mountain Ash, CF45 3AB67, Brynifor, Mountain Ash, CF45 3AB
- Sold Nov 2025£115,000 | 3 Bed House81, Duffryn Street, Mountain Ash, CF45 3HR81, Duffryn Street, Mountain Ash, CF45 3HR
- Sold Oct 2025£89,000 | 3 Bed House36, Mary Street, Mountain Ash, CF45 4HH36, Mary Street, Mountain Ash, CF45 4HH
- Sold Oct 2025£112,000 | 3 Bed House32, Oakland Street, Mountain Ash, CF45 3AL32, Oakland Street, Mountain Ash, CF45 3AL
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 £120,759, ranging from £107,140 to £142,653.
- 2 Clas Gwernifor
3 Bed House | 5 m | Est. Value: £128,945
- 4 Clas Gwernifor
3 Bed House | 8 m | Est. Value: £134,988
- 5 Clas Gwernifor
3 Bed House | 12 m | Est. Value: £128,214
- 1 Clas Gwernifor
3 Bed House | 17 m | Est. Value: £117,123
- 6 Clas Gwernifor
3 Bed House | 25 m | Est. Value: £119,032
Location Comparison
Of the 8 addresses on Clas Gwernifor, Mountain Ash, CF45, 3, Clas Gwernifor, Mountain Ash comes out as the 3rd largest and the 3rd most expensive in our analysis of the public data.
It is also £32k less expensive than the average property across the CF45 district.
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Schools Nearby
Public Transport Nearby
- Mountain Ash|400 m away
- Penrhiwceiber|1.4 km away
- Fernhill|1.7 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












