Actor Bill Hader was in complete shock upon returning ... and another good friend over at Palisades had just moved into a house and was renting the other one. He lost both of them.

Then, he pulled down his mask, smiled and it was Bill Hader!” the reporter wrote, adding that the “SNL” alum “couldn’t have been nicer!” A rep for Hader confirmed to The Post that Hader’s house was ...