A base district designation shall apply to each lot or site within the City and its planning jurisdiction. A site must be in one base district.

The Floodplain/Floodway, Planned Unit Development and Environmental Resources Overlay Districts may be applied to any lot or site or any portion thereof, in addition to a base district designation. The Mixed Use and Public Use Districts may stand alone as a base district.

Adoption of Zoning Map. Boundaries of zoning districts established by this chapter shall be shown on the Zoning Map. This map, together with all legends, references, symbols, boundaries and other information, shall be adopted as a part of and concurrent with this chapter. Said Zoning Map shall be prominently displayed in the Council chambers and/or an area accessible to the public at Papillion City Hall.

Changes to the Zoning Map. The Zoning Map may be changed from time to time by ordinance, following the procedure set forth by Article XL. Such changes shall be reflected on an Official Zoning Map. The City Clerk shall keep a complete record of all ordinances that make changes to the Zoning Map.

Where district boundaries are indicated as approximately following lot lines, such lot lines shall be considered the district boundaries.

Where district boundaries are indicated as within street or alley, railroad or other identifiable rights-of-way, the center line of such right-of-way shall be deemed the district boundary.

Where a district boundary divides a property, the location of the boundary shall be determined by the use of the scale appearing on the Zoning Map.

The City Council shall determine any other uncertainty regarding district boundaries not covered in this section.

Uses that are permitted by right. These uses are permitted subject to issuance of a building permit by the Building Official, subject only to compliance with all regulations of this chapter. Uses permitted by right might be subject to supplemental regulations contained in this chapter. These uses are indicated in the Use Matrix by a "P" in the applicable cell.

Special uses. These uses are subject to approval of a special use permit by the City Council, following the procedure set forth in § 205-302. These uses are indicated in the Use Matrix by an "S" in the applicable cell.

Site plan approval. Site plan approval is required for all use types, except single-family residential. The site plan review is conducted by the Planning Department prior to or at the time of the building permit application.

Site area per housing unit. This indicates the gross land area per unit within a residential development. For example, a forty-lot subdivision on a ten-acre (435,600 square foot) tract will have a site area per unit of 10,890 square feet. Site area per unit, which measures gross density, may differ from minimum lot size. In conservation development, the site area per unit will be larger than the minimum lot size, permitting the clustering of lots in exchange for common open space. In multifamily development, the site area per unit will usually be smaller than minimum lot size, because the lot is the legal parcel on which a multiple-unit building is built.

Minimum lot area. This indicates the minimum size of a legally described and recorded parcel upon which development can take place. As noted above, minimum lot area and site area per unit may not be the same.

Minimum lot width. This is the required minimum distance connecting at points along opposite side lot lines, measured at the required front yard setback. For example, the lot width of an irregular lot in a district requiring a twenty-five-foot front yard setback is determined by:

Minimum yards. These define the required setbacks of buildings from front, side, and rear property lines. While the yard requirements apply to a majority of development, this chapter provides for a number of exceptions. Some of these include:

Maximum setbacks. Some specific zoning districts provide maximum as well as minimum setbacks. These setbacks establish "build-to" lines that may be necessary to protect the appearance and character of special urban districts.

Maximum height. Height normally measures the vertical distance from the established grade to the highest point of a building. However, as established by the definition of "height," the point of measurement may vary for different types of buildings and roof slopes.

Maximum building coverage. This measures the percentage of a site that may be covered by the footprint of buildings. Thus, a twenty-thousand-square-foot building on a forty-thousand-square-foot site has a building coverage of 50%. This is a method of regulating the scale of buildings in an area.

Maximum impervious coverage. This measures the percentage of a site that may be covered by buildings and other surfaces and development features which prevent the penetration of water into the ground (such as driveways, porches, parking lots, and other features). Limits on impervious coverage help control the velocity and quantity of stormwater runoff and provide for groundwater recharge.

[1]Maximum amount of total parking in street yard. This controls the maximum amount of parking that can be located in the area between a building facade and the street. When applied in certain zoning districts, it is intended to reduce the number of cars seen from the street, encourage site planning which locates parking in rear and side yards, and produce a stronger relationship between buildings and streets. For example, a project with 100 parking stalls and a fifty-percent limit on the amount of parking located in street yards must locate 50 of its stalls in rear or side yards without street exposure.

Minimum depth of landscaping adjacent to street rights-of-way. This establishes the depth of landscaping that must be provided on private property adjacent to and in from the right-of-way line. Thus, if the required minimum depth is 15 feet, a project must landscape the first 15 feet of its site back from the right-of-way line. All landscaping must be done in accordance with Article XXXV, establishing landscaping standards.

Minimum buffer yard requirements. This establishes the depth of a buffer yard that must be provided by intensive land uses that are adjacent to less-intensive land uses. Less-intensive land uses typically consist of residential uses zoning districts. All landscaping must be done in accordance with Article XXXV, establishing landscaping and screening standards.

Supplemental use regulations. Certain permitted uses require satisfaction of specific requirements in order to function successfully in their urban or rural contexts. These supplemental requirements are set forth in Article XXXIII. These requirements are cross-referenced in the supplementary regulations column of the Use Matrix.