The plan decides, not the appearance
Common property is defined by the strata plan, and it frequently does not match intuition. The corridor is common; the inside face of a lot door usually is not. A balcony may be common property with exclusive use, or part of the lot, depending on the plan. Car space cleaning may be common in the aisles and lot property in the bays themselves. Reading the plan takes a few minutes and settles questions that otherwise recur at every committee meeting.
That matters because a cleaning contractor engaged by the owners corporation cannot work inside a lot at the corporation's expense. Including such areas creates an issue for the strata manager rather than for the cleaner. Establishing the boundary from the plan before scoping avoids writing a document that cannot properly be funded from levies. It also protects the committee, since an expense outside common property is difficult to justify to owners.
