Any person, firm or corporation, whose property encroaches in any manner upon, over or under any property of the city, or any street, avenue, lane, alley, sidewalk, court, place, public way, property or rights-of-way, now open or dedicated or which may hereafter be opened or dedicated to public use, within the city, who has not obtained a permit for the placing, erection and/or maintenance of such encroachment, shall remove the same after written notice by the building inspector demanding such removal. Notice of such removal shall be by registered mail, addressed to the post office address of the owner or occupant of the premises where the encroachment exists, or by personal service of such notice upon the owner or occupant, by a person authorized by the building inspector to deliver such notice. The time required for the removal of the encroachment shall be specified in the notice by the building inspector, and shall be a reasonable time considering danger, risk and size of job. The building inspector is granted the right to determine the time in his discretion, considering the aforesaid factors, and such other factors as may be involved. (Ord. 412 §1, 1996; Ord. 60 §3, 1954).