The Postal Service prohibits carriers from accepting keys for locks on private mail receptacles, buildings, or offices, except where an electromechanical door lock system or key keeper box is used.
CBUs have secure, locking mailbox, and parcel locker compartments. Whether your new development is commercial or residential, the builder or property owner is responsible for providing lock and key service for cluster box units. The locks/keys for each of the compartments will be provided with the CBU. The Postal Service will furnish the “master access lock” that allows mail to be delivered. See 3-3for more information.
Your local USPS Growth Manager will discuss specific requirements and processes appropriate for your new development as part of the overall coordination process related to establishing the mode of delivery for your new development.
