The following residential districts are hereby established: "R-1", "R-2", "R-3" and "R-4". Each of these districts is designed and intended to secure for the persons who reside there a comfortable, healthy, safe and pleasant environment in which to live, sheltered from incompatible and disruptive activities that properly belong in non-residential districts. Other objectives of some of these districts are explained in the remainder of this Section.

The "R-1" District is designed to accommodate single-family residential development in areas within the City for development at medium densities.

The "R-2" District is designed primarily to accommodate single-family detached, two-family and multi-family residential development at medium densities.

The "R-3" District is designed primarily to accommodate single-family detached, two-family and multi-family residential uses at higher densities.

The "R-4" District is designed primarily to accommodate single-family detached residential development at low densities.

The following commercial districts are hereby established: "C-1", "C-2", "C-3", "C-4" and "C-5". These districts are created to accomplish the purposes and serve the objectives set forth in the remainder of this Section.

The "C-1" (central business) District is designed to accommodate a wide variety of commercial activities (particularly those that are pedestrian oriented) that will result in the most intensive and attractive use of concentrated business areas.

The "C-2" (community business) District is designed to accommodate commercial development on a scale that is less intensive than that permitted in a "C-1" District. A lesser intensity of development is achieved through setback, height and minimum lot size requirements that are more restrictive than those applicable to the "C-1" zone. The types of uses permissible in these zones are generally similar to the types permissible in a "C-1" zone, except that additional automobile oriented businesses (e.g., drive-in banks and drive-in restaurants) not allowed in the "C-1" zone are permissible in these zones. The "C-2" thus may provide a transition in some areas between a "C-1" zone and a residential zone or may provide for a smaller scale shopping center that primarily serves one (1) neighborhood or area (as opposed to a regional shopping center). The dimensional restrictions in the zone are also designed in appropriate areas to encourage the renovation for commercial purposes of buildings that formerly were single-family residences.

The "C-3" (office/residential) District is designed to accommodate a mixture of residential uses and uses that fall primarily within the 3.000 classification in the Table of Permissible Uses (office, clerical, research, services, etc.). It is intended that this zoning classification be applied primarily in areas that no longer are viable as single-family residential areas because of high traffic volumes on adjacent streets or because of other market factors but remain viable as locations for multi-family residential developments or offices. Such areas will also generally constitute transition or buffer zones between major arterials or more intensively developed commercial areas and residential districts.

The "C-4" (general commercial) District is designed to accommodate the widest range of commercial activities.

The "C-5" (highway service) District is designed to accommodate commercial activities that draw business primarily from and provide services primarily to Interstate 44.

There are hereby established twelve (12) different Planned Unit Development (PUD) Districts as described in this Section. Each PUD District is designed to combine the characteristics of at least three (3) and possibly four (4) zoning districts.

In accordance with the description set forth in Subsection (A), the twelve (12) PUD Districts shall carry the following designations to indicate their component elements:

No area of less than twenty-five (25) contiguous acres may be zoned as a PUD District and then only upon the request of the owner or owners of all the property intended to be covered by such zone.

As indicated in the Table of Permissible Uses (Section 400.530), a planned unit development (use classification 30.000) is the only permissible use of a PUD zone and planned unit developments are permissible only in such zones.

Planned unit developments are subject to the requirements set forth in Section 400.563.

There shall be a map known and designated as the Official Zoning Map which shall show the boundaries of all zoning districts within the City.

The Official Zoning Map dated January 1998, is adopted and incorporated herein by reference. Amendments to this map shall be made and posted in accordance with Section 400.523.

Should the Official Zoning Map be lost, destroyed or damaged, the Administrator may have a new map drawn on acetate or other durable material from which prints can be made. No further Board of Aldermen authorization or action is required so long as no district boundaries are changed in this process.

Amendments to the Official Zoning Map are accomplished using the same procedures that apply to other amendments to these regulations as set forth in Article XX.

The Administrator shall update the Official Zoning Map as soon as possible after amendments to it are adopted by the Board of Aldermen. Upon entering any such amendment on the map, the Administrator shall change the date of the map to indicate its latest revision. New prints of the updated map may then be issued.

No unauthorized person may alter or modify the Official Zoning Map.

The Engineering Department shall keep copies of superseded prints of the Zoning Map for a historical reference.