It shall be unlawful and a violation of this
chapter for any owner to permit any tenant or other person to take
up residence by a rental occupancy in any dwelling unit without the
owner first having completed and filed with the Code Enforcement Officer
a rental registration form approved by the Superintendent of Buildings.
A new form must be filed whenever a dwelling unit or portion thereof
has become vacant and the owner intends to permit a new tenant or
other person to take up residence. A new form must also be filed whenever
a transfer in ownership of a building that contains rental dwelling
units occurs.