My brother had an 8 and a 10 within ten feet of his back room window a few days ago. He was...yes...sitting on the couch, watching them.
Photography might be one thing, but I wouldn't get any satisfaction out of killing a deer out of a house window.
I knew a guy though, he's dead now, that shot a big buck every year from his upstairs window. His house was well over the safety zone limit to any other houses, and of course he had permission. He owned the house!
Still not sportsmanlike to me. It's probably is legal...the law reads "occupied structure". in PA. Don't know what NJ law is. If the house is abandoned, and you have permission to hunt the property, I think you're legal. Do what you will.