17-1-0800 Official zoning atlas and maps.

   17-1-0801 Adoption. The location and boundaries of the zoning districts established by this Zoning Ordinance are shown on the Official Zoning Atlas, which – together with all notations, references, data and other information shown on the maps that comprise the atlas – is adopted and incorporated into this Zoning Ordinance.

   17-1-0802 Maintenance. The Official Zoning Atlas is maintained in the office of the Zoning Administrator. In case of any dispute regarding the zoning classification of property subject to this Zoning Ordinance, the Official Zoning Atlas maintained by the Zoning Administrator governs.

   17-1-0803 Location of District Boundaries. The following rules apply in interpreting zoning district boundaries when the location of such boundaries is unclear.

      17-1-0803-A Where zoning district boundary lines are indicated as following streets or alleys or extensions thereof, such boundary lines are to be construed as the center lines of said streets, alleys or extensions.

      17-1-0803-B Where zoning district boundary lines are indicated as adjoining railroads, such boundary lines are to be construed as the boundary lines of the railroad rights-of-way, unless otherwise dimensioned.

      17-1-0803-C Where zoning district boundary lines are indicated as adjoining expressways, such boundary lines are to be construed as the boundary lines of the expressway rights-of-way, unless otherwise dimensioned.

      17-1-0803-D Dimensioned zoning district boundary lines shown on the zoning maps are intended to coincide with property lines. Where a dimensioned boundary line coincides approximately with but not exactly with a property line that existed on the effective date of incorporation of such boundary line into the zoning maps, that boundary line is to be construed as the property line that existed at that location at the time of incorporation of that boundary line into the zoning maps.

      17-1-0803-E Streets or alleys that have been vacated will be construed to fall in the same zoning district as the lots or parcels abutting both sides of the street or alley involved. If the lots or parcels abutting each side of the street or alley were classified in different zoning districts before the street or alley was vacated, the center line of the vacated street or alley will be construed as the boundary line between the respective zoning districts.

   17-1-0804 Zoning of Annexed Lands. Before annexation of any territory into the City of Chicago, a zoning plan for the area to be annexed must be forwarded to the City Council by the Commissioner of Planning and Development.

(Added Coun. J. 5-26-04, p. 25275; Amend Coun. J. 11-19-08, p. 47220, Art. VII, § 1; Amend Coun. J. 11-8-12, p. 38872, § 242; Amend Coun. J. 11-26-13, p. 67481, Art. I, § 30)