Poopie - you really should study the Bible the literature and get Jehovah's the org's thoughts on this matter - or simply ask a mature J.W.
Didn't you know that Jehovah's the WTBT'S laws are flexible, and can be based on a person's zip/post code?
If an individual is disfellowshipped when living in the same house as other J.W.'s, then life goes on basically as it always did, with the exception of talking about JW Broadcasts, CLAM meetings, etc. (so it's not all bad!)
However, if the d/f'd individual moves out and into the house next door, then his relatives must treat him as the spawn of Satan himself and cut him off forthwith - just because his zip/post code changed!
I'm sure you'll see what a sensible and loving provision this is from our heavenly Father the "faithful slave."