Our Data Sources
120, Heol Isaf, Cardiff has a single entry in the Land Registry from August 2016 and a single entry in the EPC database dated January 2016.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 120, Heol Isaf, Cardiff would be worth £929,287, with a potential rental value of £3,173 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £823,083, with a rental value of £2,811 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
120, Heol Isaf, Cardiff occupies a 1,195 m2 plot as recorded by HM Land Registry.
Of the 27 other houses in this postcode, 22 have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
120, Heol Isaf, Cardiff has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 26 Jan 2016.
The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
120, Heol Isaf, Cardiff last changed hands on 24th August 2016, selling for £550,000. 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 26.2% since August 2016.
- Sold Aug 2016£550,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 14 sales of comparable properties within 710 metres of 120, Heol Isaf, Cardiff since 2010.
Most recently, 10, Green Place, Cardiff, CF15 8GF, a freehold house, sold at £800,000 on the 9th October 2025.
Read more about house prices in CF15.
- Sold Oct 2025£800,000 | 5 Bed House10, Green Place, Cardiff, CF15 8GF10, Green Place, Cardiff, CF15 8GF
- Sold Mar 2023£790,000 | 5 Bed House26, Llantarnam Drive, Cardiff, CF15 8GA26, Llantarnam Drive, Cardiff, CF15 8GA
- Sold May 2022£690,000 | 5 Bed House117, Heol Isaf, Cardiff, CF15 8DX117, Heol Isaf, Cardiff, CF15 8DX
- Sold Dec 2021£885,000 | 5 Bed House20, Llantarnam Drive, Cardiff, CF15 8GA20, Llantarnam Drive, Cardiff, CF15 8GA
- Sold Dec 2019£665,000 | 5 Bed House12, Drovers Way, Cardiff, CF15 8GG12, Drovers Way, Cardiff, CF15 8GG
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 £485,870, ranging from £326,572 to £768,763.
- 116 Heol Isaf
5 Bed House | 40 m | Est. Value: £768,763
- 35 St. John Avenue
3 Bed House | 51 m | Est. Value: £326,572
- 33 St. John Avenue
3 Bed House | 51 m | Est. Value: £358,135
- 37 St. John Avenue
3 Bed House | 53 m | Est. Value: £406,685
- 31 St. John Avenue
4 Bed House | 54 m | Est. Value: £446,497
Location Comparison
Our analysis of the public data ranks 120, Heol Isaf, Cardiff as the 35th largest and the 30th most expensive of the 161 addresses on Heol Isaf, Radyr, Cardiff, CF15.
Against the CF15 postcode district average, it is £493k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Radyr|800 m away
- Llandaf|1.5 km away
- Danescourt|1.5 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
