Our Data Sources
21, St. Isan Road, Cardiff has no recent1 records in the Land Registry and a single entry in the EPC database dated January 2019.
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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 21, St. Isan Road, Cardiff is in very good condition we estimate a sale value of £664,924 and a rental value of £2,026 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £588,933 and a rental value of £1,795 per month.
Plot Size
According to data from HM Land Registry, 21, St. Isan Road, Cardiff sits on a plot of 462 m2.
We have plot size data on 16 out of 16 other houses in the postcode and 21, St. Isan Road, Cardiff sits on the largest plot.
Energy Efficiency
21, St. Isan Road, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 18 Jan 2019.
The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
According to HM Land Registry, 21, St. Isan Road, Cardiff was last sold on 6th May 2005 for £340,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
- Sold May 2005£340,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 54 sales of properties similar to 21, St. Isan Road, Cardiff within a radius of 660 metres since 2015.
The most recent example is 9, St. Asaph Close, Cardiff, CF14 4LD, a freehold house which sold for £613,000 on the 6th November 2025.
Read more about house prices in CF14.
- Sold Nov 2025£613,000 | 4 Bed House9, St. Asaph Close, Cardiff, CF14 4LD9, St. Asaph Close, Cardiff, CF14 4LD
- Sold Aug 2025£550,000 | 5 Bed House1, St. Brioc Road, Cardiff, CF14 4HJ1, St. Brioc Road, Cardiff, CF14 4HJ
- Sold Jul 2025£565,000 | 4 Bed House125, Heathwood Road, Cardiff, CF14 4BJ125, Heathwood Road, Cardiff, CF14 4BJ
- Sold Apr 2025£625,000 | 4 Bed House165, Heathwood Road, Cardiff, CF14 4BN165, Heathwood Road, Cardiff, CF14 4BN
- Sold Dec 2024£675,000 | 4 Bed House159, Heathwood Road, Cardiff, CF14 4BL159, Heathwood Road, Cardiff, CF14 4BL
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 £486,832, ranging from £414,008 to £613,506.
- 19 St. Isan Road
3 Bed House | 7 m | Est. Value: £458,217
- 17 St. Isan Road
3 Bed House | 17 m | Est. Value: £451,250
- 23 St. Isan Road
4 Bed House | 28 m | Est. Value: £613,506
- 22 St. Denis Road
3 Bed House | 31 m | Est. Value: £414,008
- 23 St. Denis Road
4 Bed House | 40 m | Est. Value: £531,951
Location Comparison
St. Isan Road, Cardiff, CF14 has a total of 91 addresses. According to our analysis of all the public data, 21, St. Isan Road, Cardiff is the 13th largest and the most expensive property on the street.
When compared to the postcode district it is £261k more expensive than the average property in CF14.
More reading links
Schools Nearby
Public Transport Nearby
- Heath High Level|500 m away
- Heath Low Level|500 m away
- Ty Glas|700 m away
Available Internet Speeds
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
