§ 4-5. Registration required.
(a) In general.
(1) The owner of any non-owner-occupied dwelling unit or of any rooming house must file an annual registration statement for that unit or rooming house with the Commissioner.
(2) The owner of any vacant structure must file an annual registration statement for that structure with the Commissioner.
(b) New owner.
(1) A new owner of a non-owner-occupied dwelling unit or of a rooming house must file the registration statement within 10 days of acquiring title to the unit or rooming house.
(2) If the previous owner had registered the unit or rooming house and paid the applicable registration fee for the current registration period, the new owner need not pay any registration fee for that registration period.
(c) Newly vacant structure.
The owner of a vacant structure, whether or not previously registered as a non-owner-occupied dwelling unit or as a rooming house, must file a new registration statement and pay the fee applicable to vacant structures, within 10 days of the property's becoming a vacant structure.