The Postal Service is responsible for providing every customer a compartment lock and three (3) keys to his or her postal-owned Cluster Box Unit (CBU). No key deposits are required and customers may duplicate their keys at no expense to the Postal Service. The Postal Service keeps no duplicate keys and if the customer loses all the keys, the Postal Service will have to install a new lock and issue a new set of keys at the customer's expense.
If the mailbox is for a house, condo, apartment or other physical residence, customers make arrangements to pick up the mailbox key(s) from the owner, manager or prior resident when they move in. The builder or property owner is responsible for providing lock and key service for privately owned cluster mailboxes.
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