[danielf]

I'm not sure if I would do any redirecting unless your uncle has told you what his new address is, or has confirmed that he's moved out. Even by returning the mail, you're saying that as far as you're concerned your uncle doesn't live there anymore. I'm not sure if that's wise when he's still on the deeds, and could decide to move back in. Returning/redirecting mail might bite you later if he decides to claim you kicked him out.