Our Data Sources
18, Llandennis Avenue, Cardiff has no recent1 records in the the Land Registry and a single entry in the EPC database dated February 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
In very good condition, we estimate 18, Llandennis Avenue, Cardiff would be worth £1,530,974, with a potential rental value of £4,631 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,356,005, with a rental value of £4,102 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
18, Llandennis Avenue, Cardiff occupies a 2,026 m2 plot as recorded by HM Land Registry.
Of the 12 other houses in this postcode, 11 have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
18, Llandennis Avenue, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 03 Feb 2015.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
18, Llandennis Avenue, Cardiff last changed hands on 20th August 1997, selling for £315,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
- Sold Aug 1997£315,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 630 metres of 18, Llandennis Avenue, Cardiff across the last 2 years.
Most recently, 11A, Cyncoed Rise, Cardiff, CF23 6SF, a freehold house, sold at £1,400,000 on the 10th April 2026.
Read more about house prices in CF23.
- Sold Apr 2026£1,400,000 | 5 Bed House11A, Cyncoed Rise, Cardiff, CF23 6SF11A, Cyncoed Rise, Cardiff, CF23 6SF
- Sold Feb 2025£1,200,000 | 5 Bed HouseAshbrooke House, Cyncoed Road, Cardiff, CF23 6RXAshbrooke House, Cyncoed Road, Cardiff, CF23 6RX
- Sold Jul 2020£1,500,000 | 5 Bed House13, Llandennis Avenue, Cardiff, CF23 6JD13, Llandennis Avenue, Cardiff, CF23 6JD
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 18, Llandennis Avenue, Cardiff as the 14th largest and the 14th most expensive of the 70 addresses on Llandennis Avenue, Cardiff, CF23.
Against the CF23 postcode district average, it is £1.096m more expensive than the typical property.
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
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
