A. 
For purposes of this Part 1, any notice required hereunder to be given to a manager shall be deemed as notice given to the owner.
B. 
There shall be a rebuttal presumption that any notice required to be given to the owner under this Part 1 shall have been received by such owner if the notice was given to the owner in the manner provided by this Part 1.
C. 
A claimed lack of knowledge by the owner of any violation hereunder cited shall be no defense as long as all notices prerequisite to institution of such proceedings have been given and deemed received in accordance with the applicable provisions of this Part 1.
It shall be the duty of each owner of a regulated dwelling unit to notify the Code Enforcement Officer in writing of any change in ownership of the premises or of the number of regulated rental units on the premises. It shall also be the duty of the owner to notify the Code Enforcement Officer in writing of any increase in the number of occupants in any regulated dwelling unit or of the changing of a dwelling unit from owner-occupied to non-owner-occupied, which thereby transforms the dwelling into a regulated rental unit for purposes of this Part 1.
If any regulated rental unit is owned by more than one person, in any form of joint tenancy, as a partnership, or otherwise, each person shall be jointly and severally responsible for the duties imposed under the terms of this Part 1, and shall be severally subject to prosecution for the violation of this Part 1.
If any provision of this Part 1 or the application thereof to any person or circumstances is held invalid, such holding shall not affect the other provisions or applications of this Part 1 which can be given effect without the invalid provision or application, and to this end, the provisions of this Part 1 are declared severable.
All ordinances or parts of ordinances which are inconsistent herewith are hereby repealed to the extent of such inconsistency. Any ordinance not inconsistent with this Part 1 on the same subject matter is to be read in pari materia.