The Byzantine church had been mentioned in early Christian pilgrimage itenaries, notably those of the Bavarian bishop (and saint) Willibald in 725 AD. “[Willibald] states that the church was in Bethsaida built over the house of Peter and Andrew, among the first disciples of Jesus,†Notley related to Fox News.
For approximately two centuries, during the fourth and fifth centuries AD., the site appears to have been unoccupied. However, according to Notley, the local Christian community amazingly still remembered the location of the New Testament-era village.
Putting these two quotes together, it can be guesstimated that this church was built in the 500s or 600s (6th or 7th Centuries).