Function rather than territory
Informal boundaries in a shared warehouse move as businesses grow and shrink, so a scope drawn against where each occupier currently stands will be wrong within months. Scoping by function is more durable: the circulation route through the building, the loading door and its approach, the shared amenities and the waste area are common and are cleaned. Amenities and the waste area belong in the same category for the same reason.
Everything inside an occupier's stacks, on their racking or under their benches is theirs, regardless of where the informal line sits this year. That description holds through a change of occupier and it gives a new tenant something to read before they move a single pallet in. It also removes the recurring argument about who is responsible for the middle. Owners tend to find it easier to enforce than a boundary drawn on a plan.
