116 West Crosstimbers Drive
Barbecue Inn's current building, according to both HCAD and newspaper records, was built in 1965. As of 1961, the 116 West Crosstimbers address was a private residence, with a fire reported in 1961 that damaged the roof.
It appears the "established 1946" was when current ownership took over--much like how what is now Domino's marks its establishment when it was new management that took over Ypsilanti, Michigan's "Domi-Nick's Pizza", but the original address of Barbecue Inn isn't clear, and establishments with that name in Houston have been around since the 1930s. Pictures from author, 3/2019.