Scott Disick -- Persona Not Grata at Family Home ... Without Permission (PHOTOS)

Scott Disick is officially a guest in his own home ... meaning he can't come in without Kourtney Kardashian's permission.

Scott showed up at the family residence in Calabasas Sunday, but this time his Rolls had to veer left in the visitors line at the guard shack. TMZ broke the story on July 14 that Kourtney took him off the residents list, which allows entry no questions asked.

So much for reconciliation.