It has owners, the descendants of the owner who died in the 1990s.
So while I doubt anybody is going to miss anything you jack out of there.. It's no different than stealing anything else that doesn't belong to you.
I'm not a thief so I don't want things that aren't mine. But if I was going to lower myself to that , I'd steal something way cooler and more valuable than shit out of a dead old man's house.