Our Data Sources
27, Heol Isaf, Cardiff has no recent1 records in the Land Registry and a single entry in the EPC database dated December 2025.
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 27, Heol Isaf, Cardiff is in very good condition we estimate a sale value of £1,132,759 and a rental value of £3,807 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,003,301 and a rental value of £3,372 per month.
Plot Size
According to data from HM Land Registry, 27, Heol Isaf, Cardiff sits on a plot of 772 m2.
We have plot size data on 7 out of 7 other houses in the postcode and 27, Heol Isaf, Cardiff sits on the largest plot.
Energy Efficiency
27, Heol Isaf, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Dec 2025.
The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
According to HM Land Registry, 27, Heol Isaf, Cardiff was last sold on 14th July 2000 for £223,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
- Sold Jul 2000£223,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 9 sales of properties similar to 27, Heol Isaf, Cardiff within a radius of 940 metres since 2009.
The most recent example is 17, Heol Isaf, Cardiff, CF15 8AG, a freehold house which sold for £6,000 on the 24th March 2025.
Read more about house prices in CF15.
- Sold Mar 2025£6,000 | 5 Bed House17, Heol Isaf, Cardiff, CF15 8AG17, Heol Isaf, Cardiff, CF15 8AG
- Sold Apr 2024£950,000 | 5 Bed House2, Clos Bryn Melyn, Cardiff, CF15 8DE2, Clos Bryn Melyn, Cardiff, CF15 8DE
- Sold Sep 2022£950,000 | 5 Bed House20, Windsor Road, Cardiff, CF15 8BQ20, Windsor Road, Cardiff, CF15 8BQ
- Sold Mar 2020£740,000 | 5 Bed House23, Windsor Road, Cardiff, CF15 8BQ23, Windsor Road, Cardiff, CF15 8BQ
- Sold Jan 2016£805,000 | 5 Bed House10, Plymouth Drive, Cardiff, CF15 8BL10, Plymouth Drive, Cardiff, CF15 8BL
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 £929,896, ranging from £612,081 to £1,179,124.
- 25 Heol Isaf
4 Bed House | 5 m | Est. Value: £846,740
- 31 Heol Isaf
5 Bed House | 25 m | Est. Value: £1,179,124
- 26 Windsor Crescent
5 Bed House | 52 m | Est. Value: £612,081
- 10 Heol Isaf
5 Bed House | 58 m | Est. Value: £790,725
- 18 Heol Isaf
5 Bed House | 64 m | Est. Value: £974,458
Location Comparison
Heol Isaf, Radyr, Cardiff, CF15 has a total of 161 addresses. According to our analysis of all the public data, 27, Heol Isaf, Cardiff is the 29th largest and the 17th most expensive property on the street.
When compared to the postcode district it is £685k more expensive than the average property in CF15.
More reading links
Schools Nearby
Public Transport Nearby
- Radyr|300 m away
- Coryton|1.5 km away
- Llandaf|1.9 km 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.
