Sage was 36. His body was discovered in his Hollywood Hills home Friday.
"Sage often spent days in his room which was littered with junk, including an enormous number of cigarette butts, beer and soda cans, and food. We are told there were two drawers filled with various pill bottles, some of which were huge," sources told tmz.com.
Sources say he was living like a hermit. No one had spoken with him since a week ago Friday. Although the housekeeper had been there earlier this week, she had specific ongoing instructions never to enter Sage's room. In fact, the housekeeper was told to never to even knock at the door.
Sources called the room disgusting, saying it reeked of various smells.
Sage's mother called the housekeeper Friday after being unable to reach him, asking her to stop by and check on him. That is when she discovered the body.
Law enforcement sources say Sage's death was an accident.