I Have A Cockapoo, He Is A Year And Half I’ve Only Had Him Since November?

i am moving in to a new apartment with a roommate I live by myself now and I let him do almost whatever he wants he good but sometimes when he gets bored and I am gone he does bad stuff like tearing of the carpet. What should I do at my new place I don’t want to put him in a crate or cage or whatever because he has never been trained like that not even by his prior owners, but I can’t have him tearing up stuff. HELP please.