Our Data Sources
66, Celyn Avenue, Cardiff has no records in the Land Registry and a single entry in the EPC database dated February 2014.
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 66, Celyn Avenue, Cardiff would be worth £513,253, with a potential rental value of £1,722 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £454,595, with a rental value of £1,525 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
66, Celyn Avenue, Cardiff occupies a 566 m2 plot as recorded by HM Land Registry.
Of the 19 other houses in this postcode, 17 have recorded plot sizes, and this one ranks as the 2nd largest.
Energy Efficiency
66, Celyn Avenue, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 25 Feb 2014.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 115 sales of comparable properties within 640 metres of 66, Celyn Avenue, Cardiff since 2016.
Most recently, 1, Brynderwen Close, Cardiff, CF23 6BR, a freehold house, sold at £450,000 on the 8th May 2026.
Read more about house prices in CF23.
- Sold May 2026£450,000 | 4 Bed House1, Brynderwen Close, Cardiff, CF23 6BR1, Brynderwen Close, Cardiff, CF23 6BR
- Sold Oct 2025£490,000 | 4 Bed House57, Celyn Avenue, Cardiff, CF23 6EJ57, Celyn Avenue, Cardiff, CF23 6EJ
- Sold Oct 2025£510,000 | 4 Bed House88, Lakeside Drive, Cardiff, CF23 6DG88, Lakeside Drive, Cardiff, CF23 6DG
- Sold Oct 2025£535,000 | 4 Bed House7, Lakeside Drive, Cardiff, CF23 6DD7, Lakeside Drive, Cardiff, CF23 6DD
- Sold Sep 2025£495,000 | 4 Bed House14, Lomond Crescent, Cardiff, CF23 6ES14, Lomond Crescent, Cardiff, CF23 6ES
Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Explore Nearby Properties
The surrounding properties have an average estimated value of £504,247, ranging from £392,443 to £791,457.
- 64 Celyn Avenue
5 Bed House | 12 m | Est. Value: £791,457
- 68 Celyn Avenue
4 Bed House | 18 m | Est. Value: £530,824
- 68A Celyn Avenue
3 Bed House | 18 m | Est. Value: £393,775
- 19 Carnegie Drive
3 Bed House | 51 m | Est. Value: £392,443
- 17 Carnegie Drive
3 Bed House | 51 m | Est. Value: £412,737
Location Comparison
Our analysis of the public data ranks 66, Celyn Avenue, Cardiff as the 17th largest and the 20th most expensive of the 148 addresses on Celyn Avenue, Cardiff, CF23.
Against the CF23 postcode district average, it is £125k more expensive than the typical property.
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Schools Nearby
Public Transport Nearby
- Heath High Level|700 m away
- Heath Low Level|700 m away
- Ty Glas|1.9 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.





