Our Data Sources
21, King Street, Cardiff has no records in the the Land Registry and a single entry in the EPC database dated November 2022.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 21, King Street, Cardiff would be worth £127,037, with a potential rental value of £979 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £112,518, with a rental value of £867 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
21, King Street, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 Nov 2022.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 9 sales of comparable properties within 1.5 kilometres of 21, King Street, Cardiff across the last 2 years.
Most recently, Flat 3, 68, Cardiff Road, Cardiff, CF15 7PQ, a leasehold flat, sold at £118,000 on the 28th February 2025.
Read more about house prices in CF15.
- Sold Feb 2025£118,000 | 2 Bed FlatFlat 3, 68, Cardiff Road, Cardiff, CF15 7PQFlat 3, 68, Cardiff Road, Cardiff, CF15 7PQ
- Sold Feb 2025£75,000 | 2 Bed Flat14 Rhiwddar Flats, Bryn Coch, Cardiff, CF15 7QB14 Rhiwddar Flats, Bryn Coch, Cardiff, CF15 7QB
- Sold Jan 2023£120,000 | 2 Bed Flat23, King Street, Cardiff, CF15 7PH23, King Street, Cardiff, CF15 7PH
•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 21, King Street, Cardiff as the 25th largest and the 25th most expensive of the 31 addresses on King Street, Taffs Well, Cardiff, CF15.
Against the CF15 postcode district average, it is £272k less expensive than the typical property.
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Schools Nearby
Public Transport Nearby
- Taffs Well|400 m away
- Radyr|3.2 km away
- Trefforest Estate|3.3 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.












