I would think that they'd have knocked on every door nearby Harley's house and questioned those neighbors. And when nobody answered at the unoccupied house, they'd have went back and tried again. And if nobody answered there again, then they'd follow up on that, too. Like try again until they get somebody or try to contact the owner. Apparently they had no trouble contacting the owner yesterday to get permission to search..
So, the explanation that LE didn't know until yesterday that it was unoccupied is ridiculous if they were doing actual police work trying to find Harley. I mean, what, did they just go "Welp, I guess those people aren't going to talk to us. Moving on!" after nobody answered the door there..?
my opinion only