(a) As used in this chapter, “house” means any dwelling house, business block or building used for business purposes. “Street” means any street, avenue, lane, alley, public place or highway.
(b) The Commissioner of Engineering and Construction shall prepare maps of all streets required to be numbered, drawn to an accurate scale, showing all intersecting streets and the location of the fronts of all houses and each front doorway in the same. The whole length of the street shall be divided up into spaces or lots of twenty (20) or ten (10) feet front as provided in Section 305.03. A number shall be given for each space, and the number coinciding most nearly with the location of any doorway shall be the number of the same; consecutive numbers shall be placed directly opposite on lines at right angles to the street. All numbers placed on houses under these sections shall be indicated on the maps. The maps shall be bound in convenient volumes, kept on file in the office of the Commissioner and shall be the property of the City.