The elevator ride starts with permission
Condo and office buildings may use lobby registration, loading access, service elevators, parking validation, and management approval. Arrange those details before scheduling. The person requesting service should be able to meet the locksmith and verify authorization for the unit, office, or vehicle.
If the request involves a smart lock or replacement hardware, check building rules about exterior appearance and master access. A device that fits a single-family door may not be appropriate for a managed corridor opening. Photos and manager requirements help define the right scope.