This sub-zoning system would be a complex answer to this specific request - and an answer to other requests I've seen around. Would be great to sub-zone my residence. In truth though - something this complicated is not needed (for this request). It's as simple as - allow a sign above a chest for a residence owner to lock - regardless of flags. Only the residence owner needs it, as it can be his private chest on his residence, and anyone else who is part of his residence flags - well, they have their own residence where they can have a private chest. Sub-zoning = cool. Private chest for residence owner = simple and many people seem to want this And as always - BUMP.