Our Data Sources
40, St. Marys Avenue, Barry has no records in the Land Registry and a single entry in the EPC database dated November 2014.
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 40, St. Marys Avenue, Barry would be worth £216,102, with a potential rental value of £1,252 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £191,405, with a rental value of £1,109 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
40, St. Marys Avenue, Barry occupies a 107 m2 plot as recorded by HM Land Registry.
Of the 42 other houses in this postcode, 37 have recorded plot sizes, and this one ranks as the 30th largest.
Energy Efficiency
40, St. Marys Avenue, Barry has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 29 Nov 2014.
The property is connected to mains gas and has fully double glazed windows. It is heated using room heaters (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 292 sales of comparable properties within 420 metres of 40, St. Marys Avenue, Barry since 2022.
Most recently, 33, Station Street, Barry, CF63 4LW, a freehold house, sold at £205,000 on the 30th April 2026.
Read more about house prices in CF63.
- Sold Apr 2026£205,000 | 4 Bed House33, Station Street, Barry, CF63 4LW33, Station Street, Barry, CF63 4LW
- Sold Jan 2026£190,000 | 4 Bed House69, Castleland Street, Barry, CF63 4LL69, Castleland Street, Barry, CF63 4LL
- Sold Dec 2025£158,000 | 4 Bed House31, St. Marys Avenue, Barry, CF63 4LT31, St. Marys Avenue, Barry, CF63 4LT
- Sold Nov 2025£205,000 | 4 Bed House65, St. Marys Avenue, Barry, CF63 4LT65, St. Marys Avenue, Barry, CF63 4LT
- Sold Nov 2025£220,000 | 3 Bed House56, Castleland Street, Barry, CF63 4LP56, Castleland Street, Barry, CF63 4LP
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 £196,599, ranging from £177,471 to £220,530.
- 38 St. Marys Avenue
3 Bed House | 4 m | Est. Value: £198,975
- 42 St. Marys Avenue
3 Bed House | 5 m | Est. Value: £198,975
- 36 St. Marys Avenue
3 Bed House | 9 m | Est. Value: £203,884
- 34 St. Marys Avenue
3 Bed House | 14 m | Est. Value: £200,954
- 46 St. Marys Avenue
3 Bed House | 15 m | Est. Value: £205,811
Location Comparison
Our analysis of the public data ranks 40, St. Marys Avenue, Barry as the 47th largest and the 30th most expensive of the 100 addresses on St. Marys Avenue, Barry, CF63.
Against the CF63 postcode district average, it is £1k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Barry Docks|200 m away
- Cadoxton|1.3 km away
- Barry Island|1.5 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












