Our Data Sources
66, Heol Williams, Cardiff has a single entry in the Land Registry from December 2018 and a single entry in the EPC database dated December 2018.
We combine this information with that 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 66, Heol Williams, Cardiff would be worth £377,932, with a potential rental value of £1,653 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £334,740, with a rental value of £1,464 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
66, Heol Williams, Cardiff occupies a 281 m2 plot as recorded by HM Land Registry.
Of the 58 other houses in this postcode, 56 have recorded plot sizes, and this one ranks as the 5th largest.
Energy Efficiency
66, Heol Williams, Cardiff has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 13 Dec 2018.
The property is not connected to mains gas and has high performance glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
66, Heol Williams, Cardiff last changed hands on 20th December 2018, selling for £299,995. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has risen by 3.6% since December 2018.
- Sold Dec 2018£299,995
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 464 sales of comparable properties within 750 metres of 66, Heol Williams, Cardiff across the last 2 years.
Most recently, 19, Heol Booths, Cardiff, CF3 6WA, a freehold house, sold at £358,000 on the 16th January 2026.
Read more about house prices in CF3.
- Sold Jan 2026£358,000 | 3 Bed House19, Heol Booths, Cardiff, CF3 6WA19, Heol Booths, Cardiff, CF3 6WA
- Sold Nov 2025£368,000 | 3 Bed House32, Heol Booths, Cardiff, CF3 6WA32, Heol Booths, Cardiff, CF3 6WA
- Sold Jul 2022£379,950 | 3 Bed House21, Rees Drive, Cardiff, CF3 6AS21, Rees Drive, Cardiff, CF3 6AS
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 66, Heol Williams, Cardiff as the 6th largest and the 5th most expensive of the 58 addresses on Heol Williams, Old St. Mellons, Cardiff, CF3.
Against the CF3 postcode district average, it is £102k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Llanishen|4.1 km away
- Lisvane & Thornhill|4.4 km away
- Heath High Level|4.6 km away
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
