A. Buildings and unimproved real property, when required to be designated by this Chapter, shall be designated numerically. The first numerals of such designation shall consist of the grid block number as shown by the official map in which the building or unimproved real property is situated, e.g., 16, 80, 176. The last two numerals of such designation should be no less than 01 nor greater than 99 on the north and east sides of the way-of-travel, and no less than 02 nor greater than 98 on the south and west sides of the way-of-travel. The complete numerical designation for a building or unimproved real property may be, for example, 1605, 14428, 28822 or 40012.

B. Except as provided in subsection C of this Section, odd numerical designations shall be assigned to the north and east sides of ways-of-travel and even numerical designations shall be assigned to the south and west sides of ways-of-travel.

The geographic direction of a way-of-travel shall be determined by observing its overall length and noting its general or predominant direction.

When possible, even and odd numerical designations shall be assigned consecutively and opposite one another.

C. Buildings and unimproved real property situated on a circular way-of-travel may be numbered consecutively beginning at the point of origin and proceeding progressively around such circle or loop, providing that such a numbering system is necessary to promote the intent and spirit of this Chapter or to reduce or eliminate potential confusion.

D. Each unit of duplexes, triplexes or fourplexes shall receive a numerical designation.

E. Buildings with multiple tenantable or habitable units, such as apartment buildings and condominiums, shall receive one numerical designation. Individual units shall be designated by suffixed letters or numbers.