Our Data Sources
20, Llandennis Avenue, Cardiff has no records in the the Land Registry and a single entry in the EPC database dated April 2015.
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
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 20, Llandennis Avenue, Cardiff, we estimate a market value of £1,584,807 and a rental value of £4,794 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £1,403,686 and £4,246 per month respectively.
Plot Size
HM Land Registry records the plot of land for 20, Llandennis Avenue, Cardiff as measuring 1,297 m2.
That makes it the 9th largest plot in the postcode, where 11 of the 12 other houses have recorded plot data.
Energy Efficiency
20, Llandennis Avenue, Cardiff has an Energy Performance Rating (EPC) of G. This is based on the most recent assessment, dated 24 Apr 2015.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 2 properties similar to 20, Llandennis Avenue, Cardiff have sold within a radius of 640 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 14th November 2025, was 23, Llandennis Avenue, Cardiff, CF23 6JE, a freehold house which sold for £1,500,000.
Read more about house prices in CF23.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 70 addresses on Llandennis Avenue, Cardiff, CF23, 20, Llandennis Avenue, Cardiff comes out as the 30th largest and the 12th most expensive in our analysis of the public data.
It is also £1.147m more expensive than the average property across the CF23 district.
More reading links
Schools Nearby
Public Transport Nearby
- Heath High Level|1.1 km away
- Heath Low Level|1.2 km away
- Llanishen|1.8 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
