(A) The plan known as the Philadelphia Plan system of numbering houses is adopted in the city.
(B) The Philadelphia Plan of numbering houses, as adopted, is as follows:
(1) Streets running north and south shall be divided by Eads Parkway as a base, with odd numbers on the west side and even numbers on the east side and all streets extending north of Eads Parkway shall be numbered north and all streets extending south of Eads Parkway shall be numbered south.
(2) Streets running east and west shall be divided by Walnut Street, as a base, with odd numbers on the south side and even numbers on the north side and all streets extending east of Walnut Street shall be numbered east and all streets extending west of Walnut Street shall be numbered west.
(3) Streets extending north and south of Eads Parkway and all streets extending east and west of Walnut Street shall begin to number with 100 as a basis for even numbers and 101 as a basis for odd numbers and each 40 feet along the front property line of any street shall constitute a separate number; provided, however, that the distance between any two cross streets on each block shall constitute a separate serial of 100 and that each cross street or block north or south from Eads Parkway and each cross street or block east or west from Walnut Street shall begin a number with the corresponding hundred as a serial that it is distant removed from its base, allowing 100 as a serial for each block or the distance between two cross streets.
(C) Numbers assigned prior to the adoption of this code may be retained by the owner at the time of adoption of this code. Upon change in ownership, such number may be required to be changed to conform to this section.
(`94 Code, § 95.03)