Why shared buildings complicate a simple claim
In a single tenancy the chain is short: something was damaged, the cleaner was present, the contractor's insurer considers the claim. In a tower the damage may appear in another tenancy, in common property, or in base building services. The affected party has no contract with the cleaning contractor and often does not know who attended, so the claim travels through the landlord or building manager first.
That indirect route is where evidence gaps appear. By the time the question reaches the cleaning contractor, days may have passed, the timeline is second-hand, and other trades were also in the building that night. A contractor who can produce its own attendance record and any observations made at the time is in a materially different position from one relying on memory.
