Queen Bey's the new owner of a stone structured, 7,500 sq. ft house of God in The Big Easy. The New Orleans church -- which is more than 100 years old -- was listed at $850,000 ... but it's unclear if she got a divine discount.

We're told Beyonce's church was built in the early 1900s, but has been out of commission as a place of worship for some time due to its church members passing away.

Looks like it could be revival time though ... and Beyonce shouldn't have any issues finding folks willing to get in formation and join her congregation. Her sister, Solange, lives nearby, too.

Speaking of ... a San Francisco church held the first ever "Beyonce Mass" a few weeks ago and had more than 900 people show up for it.