Our Data Sources
20, Syon Park Close, Cardiff has no 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 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 20, Syon Park Close, Cardiff would be worth £242,949, with a potential rental value of £1,367 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £215,183, with a rental value of £1,211 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
20, Syon Park Close, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Feb 2015.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 204 sales of comparable properties within 490 metres of 20, Syon Park Close, Cardiff across the last 2 years.
Most recently, 10, Thrush Close, Cardiff, CF3 0PE, a freehold house, sold at £158,000 on the 13th May 2026.
Read more about house prices in CF3.
- Sold May 2026£158,000 | 3 Bed House10, Thrush Close, Cardiff, CF3 0PE10, Thrush Close, Cardiff, CF3 0PE
- Sold Aug 2025£225,000 | 3 Bed House6, Thrush Close, Cardiff, CF3 0PE6, Thrush Close, Cardiff, CF3 0PE
- Sold Aug 2024£231,000 | 3 Bed House25, Willowbrook Gardens, Cardiff, CF3 0BF25, Willowbrook Gardens, Cardiff, CF3 0BF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 20, Syon Park Close, Cardiff as the 18th largest and the 23rd most expensive of the 44 addresses on Syon Park Close, St. Mellons, Cardiff, CF3.
Against the CF3 postcode district average, it is £27k less expensive than the typical property.
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Schools Nearby
Public Transport Nearby
- Heath High Level|6.0 km away
- Heath Low Level|6.0 km away
- Llanishen|6.0 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












