For use in this chapter, the following terms are defined:

   1.   “Owner” means the owner of the principal building.

   2.   “Principal building” means the main building on any lot or subdivision thereof.

   Every owner shall comply with the following numbering requirements:

   1.   Obtain Building Number. The owner shall obtain the assigned number to the principal building from the Building Department.

   2.   Display Building Number. The owner shall place or cause to be installed and maintained on the principal building the assigned number in a conspicuous place to the street. The number shall be in figures not less than three inches in height for a residential premises and not less than six inches in height for all other buildings and of a contrasting color with their background.

   3.   Failure to Comply. If an owner refuses to number a building as herein provided, or fails to do so for a period of 30 days after being notified in writing by the City to do so, the City may proceed to place the assigned number on the principal building and assess the costs against the property for collection in the same manner as a property tax.

   The Building Department shall be responsible for preparing and maintaining a building numbering map.