Except as otherwise provided in this section, each elevator unit owned or to be operated shall be registered with the Commissioner at least 60 days before its planned completion and before it is placed in service. The owner or lessee of each elevator unit shall register it on the form provided by the Commissioner. For each elevator unit registered, the owner or lessee shall provide: its type; its rating load and speed; the name of its manufacturer; its location; the purpose for which it is used; and any other information the Commissioner requires. The Commissioner: may not disclose to the public any information regarding a registered elevator unit installed in a privately owned single–family residential dwelling; and shall delete the registration of an elevator unit that is installed in a privately owned single–family residential dwelling on completion of the final acceptance inspection under § 12–810 of this subtitle. Under emergency circumstances, an owner or lessee may register an elevator unit with the Commissioner with less than 60 days’ notice in accordance with regulations adopted under Part II of this subtitle. This subsection does not apply to an elevator unit that is installed in a privately owned single–family residential dwelling. After an elevator unit is placed in service and a certificate issued pursuant to § 12–811(a) of this subtitle, the owner or lessee shall reregister the elevator unit with the Commissioner 30 days prior to the expiration of the certificate.