 without the bank's knowledge, under the table, and when they discover that, they'll call the whole mortgage and foreclose on him and take your house that you put $150,000 down on. Dumb. Oh, if the house burns, you've got no insurance, doofus, because you don't own the house, and their homeowner's insurance doesn't cover you as a renter. They had to transfer that to fire and EC, and they didn't do that either.