40, Heol Isaf
40, Heol Isaf
Description & Estimates
According to the public record, 40, Heol Isaf, Cardiff is a period freehold house with 3,498 ft2 of internal area and sits on a 1,147 m2 plot.
Houses of this size in this area normally have 5 bedrooms with a garden.
Based on available information, and assuming reasonable condition, the estimated sale value for 40, Heol Isaf, Cardiff is £1,192,417 and the estimated rental value is £4,210 per month.
Heol Isaf, Radyr, Cardiff, CF15 is located within the CF15 postal district.
Our Data Sources
40, Heol Isaf, Cardiff has 2 entries in the Land Registry , most recently in August 2025 and a single entry in the EPC database dated November 2022.
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
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 40, Heol Isaf, Cardiff is in very good condition we estimate a sale value of £1,252,038 and a rental value of £4,420 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,108,948 and a rental value of £3,915 per month.
Recent Market Change
Over the past 12 months, the estimated sale value of 40, Heol Isaf, Cardiff has fallen by £5,306 (0.4%), while its estimated rental value has moved up by £108 per month (2.6%). Based on current estimates, the property offers a gross rental yield of 4.2%.
Plot Size
According to data from HM Land Registry, 40, Heol Isaf, Cardiff sits on a plot of 1,147 m2.
We have plot size data on 8 out of 8 other houses in the postcode and 40, Heol Isaf, Cardiff sits on the largest plot.
Energy Efficiency
40, Heol Isaf, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 03 Nov 2022.
The property is connected to mains gas and has partial double glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 40, Heol Isaf, Cardiff was last sold on 20th August 2025 for £1,300,000 and was recorded as a freehold house.
The property has had 2 sales since 1995.
Since August 2025, the market for similar properties has dropped by 22.5%.
- Sold Aug 2025£1,300,000
- Sold Nov 2015£655,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 40, Heol Isaf, Cardiff within a radius of 940 metres over the last 2 years.
The most recent example is 20, Heol Isaf, Cardiff, CF15 8AL, a freehold house which sold for £865,000 on the 6th April 2020.
Read more about house prices in CF15.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Heol Isaf, Radyr, Cardiff, CF15 has a total of 161 addresses. According to our analysis of all the public data, 40, Heol Isaf, Cardiff is the 15th largest and the 7th most expensive property on the street.
When compared to the postcode district it is £805k more expensive than the average property in CF15.
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Schools Nearby
Public Transport Nearby
The closest station to 40, Heol Isaf, Cardiff is Radyr station, which is 300 metres away.
- 300mRadyr
- 1.5kmCoryton
- 1.7kmLlandaf
Available Internet Speeds
According to recent data from Ofcom, superfast broadband is available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
