The zoning regulations and districts herein established have been made in accordance with a comprehensive plan for the purpose of promoting the health, safety, morals, and the general welfare of the city. They have been designed to lessen the congestion in the streets; to secure safety from fire, panic, and other dangers; to provide adequate light and air; to prevent the overcrowding of land; to avoid undue concentration of population; to facilitate the adequate provisions of transportation, water, sewerage, schools, parks, and other public requirements. They have been made with reasonable consideration, among other things, for the character of the district and its peculiar suitability for particular uses, and with a view of conserving the value of buildings and encouraging the most appropriate use of the land throughout the city.
(1977 Code, sec. 13-11)
For the purposes of this article, certain terms or words used herein shall be interpreted as follows:
Accessory building.
(1) 
In a residential district, a subordinate building, attached to or detached from the main building, without separate utilities, not used for commercial purposes, and not rented, and containing servant’s quarters, a washroom, a storage room for domestic storage only, and space for one or more automobiles.
(2) 
In other districts, a subordinate building, the use of which is incidental to and used only in conjunction with the main building.
Accessory use.
A use subordinate to the principal use of a building or a lot and serving a purpose customarily incidental to the principal use.
Agent of owner.
Any person who can show certified written proof that he is acting for the property owner.
Alley.
A public or private way not more than 30 feet wide affording only secondary means of access to abutting property.
Apartment.
A room or suite of rooms in an apartment house arranged, designed, or occupied as a residence by a single family, individual, or group of individuals.
Apartment house.
Any multiple-family dwelling or building or portion thereof, which is designed, built, rented, leased, or hired out to be occupied as the house or residence of three or more families living independently of each other and maintaining separate cooking facilities.
Basement.
A story whose floor is more than 12 inches, but not more than half of its story height below the average level of the adjoining ground (as distinguished from a “cellar” which is a story more than one-half below such level). A basement or cellar, when used as a dwelling, shall be counted as a story for purposes of height measurement.
Beginning of construction.
The incorporation of labor and material within the foundation of the building or buildings.
Boardinghouse.
A building other than a hotel, where lodging and meals for five or more persons are served for compensation.
Building.
Any structure having a roof supported by columns or walls, used or intended to be used for the shelter or enclosure of persons, animals, or property. When such a structure is divided into separate parts of one or more unpierced walls extending from the ground up, each part is deemed a separate building.
Building line.
A line parallel or approximately parallel to a lot line or street line and beyond which buildings may not be erected.
Building, main.
A building in which is conducted the principal use of the site on which it is located. In any residential district any and all dwellings shall be deemed to be main buildings on the site on which they are located.
Building official.
The building inspector of the city or other official appointed by the city manager to enforce the zoning ordinance.
Clinic, medical.
An institution or station for the examination and treatment of ill and afflicted outpatients.
Convalescent home.
Any structure used for or occupied by persons recovering from illness or suffering from the infirmities of old age.
Court.
An open, unoccupied, and unobstructed space, other than a yard, on the same lot with a building or group of buildings, except as used in a judicial sense.
Coverage of a lot, or maximum allowable building area.
The ratio of gross floor area of the first floor of a building or of a group of buildings on the same lot to the area of the lot, expressed as a percentage.
Day nursery.
A place where six or more children are kept.
Density.
The maximum number of family units permitted on a lot.
Detached structure.
Any building, accessory building, or structure that is not physically attached to any other building or structure by any means.
District or zoning district.
A portion of the territory of the city within which certain uniform regulations and requirements or various combinations thereof apply under the provisions of this article.
Dwelling.
Any building or portion thereof designed or used exclusively as the residence or sleeping place of one or more persons, but not including a tent, trailer, or mobile home.
Dwelling, duplex or two-family.
A building designed for or used exclusively for residence purposes by two families or two housekeeping units.
Dwelling, multiple-family.
A building or portion thereof designed for or used by three or more families or housekeeping units.
Dwelling, single-family.
A building designed for or used exclusively for residence purposes by one family or housekeeping unit.
Dwelling unit, or unit.
One room, or a suite of two or more rooms, designed for or used by one family for living and sleeping purposes and having only one kitchen or kitchenette.
Family.
A person living alone, or two or more persons living together as a single housekeeping unit in a dwelling unit, and in which not more than four individuals are unrelated by blood.
Floor area of a building.
The sum of the gross horizontal areas of the several floors of a building or buildings, measured from the exterior faces of exterior walls or from a centerline of walls separating two buildings in square feet.
Grade, existing.
The average level of the original surface of the ground adjacent to the exterior walls of the building.
Hotel.
A building occupied as the more or less temporary abiding place of individuals who are lodged with or without meals, in which as a rule the rooms are occupied for hire, and in which there are more than 12 sleeping rooms, a public room for the accommodation of more than 12 guests, and a general kitchen.
Kennel.
A place where a combination of more than three dogs and/or cats are kept; provided, however, that animals under six months old will not be included.
Lot.
Includes the words plot or parcel. One piece, parcel, or tract of land which collectively meets all of the following requirements at the time of filing for a zoning permit:
(1) 
Is located within a single block;
(2) 
Has frontage on an accepted and improved public street;
(3) 
Is occupied or utilized or designated by its owner, owners, or developer to be occupied, developed, or utilized as a unit for a principal use and uses accessory thereto, together with such open spaces as are required by this article; and
(4) 
Of which a plat has been recorded in the office of the county clerk.
Lot, area of.
The area of the lot shall be the net area of the lot and shall not include portions of streets and alleys.
Lot depth.
The mean horizontal distance between the front lot line and rear lot line of a zoning lot.
Lot line.
A boundary of a lot.
Lot line, front.
The street line at the front of a lot.
Lot line, rear.
The lot line opposite and most distant from the front.
Lot line, side.
A lot line which is not a front lot line or rear lot line. A side lot line separating a lot from a thoroughfare other than an alley is an exterior side lot line as opposed to an interior side lot line.
Lot width.
The mean horizontal distance between the side lot lines of a lot.
Mobile home.
Any vehicle or similar portable structure having no foundation other than wheels or jacks or skirtings, and so designed or constructed as to permit occupancy for dwelling or sleeping purposes. Mobile homes are considered to be structures for the purposes of this article when they are parked in a mobile home park.
Mobile home park.
Any lot upon which are located one or more mobile homes occupied for dwelling purposes, regardless of whether or not a charge is made for such accommodation.
Motel.
A building or group of buildings, including either separate units or a row or rows of units which:
(1) 
Contain living or sleeping accommodations primarily for transient occupancy; and
(2) 
Have individual entrances.
Nursing home.
Any premises where more than three persons are lodged and furnished with meals and nursing care.
Open space.
Area included in any side, rear, or front yard or any other unoccupied space on a lot that is open and unobstructed to the sky.
Person.
Includes a firm, association, organization, partnership, trust, company or corporation as well as an individual.
Servant’s quarters, bona fide.
Living quarters located on the same lot as the main building for the family of a servant employed on the premises who receives at least 50 percent of his total income from the occupant of the main building.
Setback line.
That line which is parallel to and the minimum allowable horizontal distance from a given point or line of reference, such as a lot line, to the minimum required building line.
Shall, may.
The word “shall” is mandatory; the word “may” is permissive.
Sign.
Any structure or part thereof, or any device attached to, painted on or represented on a building or other structure, upon which is displayed or included any letter, work, model, banner, decoration, device, or representation used as, or which is in the nature of, an announcement, direction, advertisement, or other attention-directing device.
Sign, area of.
The total exterior surface computed in square feet of a sign having but one exposed exterior surface; the aggregate exposed exterior surface computed in square feet of a sign having more than one such surface.
Story.
That portion of a building included between the surface of any floor and the ceiling next above it.
Street.
Any thoroughfare other than an alley.
Street line.
A dividing line between a street and an abutting lot, tract, or parcel of land.
Structure.
Anything constructed, the use of which requires permanent location on the ground or attachment to something having a permanent location on the ground.
Structural alteration.
Any change in the structural members of a building, such as walls, columns, beams, or girders.
Tense.
The present tense includes the future tense, the singular number includes the plural, and the plural number includes the singular.
Used or occupied.
Includes the words intended, designed or arranged to be used or occupied.
Yard.
An open, unoccupied space, other than a court, on the lot in which a building is situated and which is unobstructed from the ground to the sky.
Yard, front.
An open, unoccupied space on a lot facing a street and extending across the front of a lot between the side yard lines and being the minimum horizontal distance between the street line and the main building.
Yard, required front.
An open space extending the full width of a lot between the front lot line and the front setback line, unoccupied and unobstructed from the ground upward except as specified elsewhere in this article.
Yard, rear.
An open space unoccupied and unobstructed extending across the rear of a lot from one side lot line to the other side lot line and being the minimum horizontal distance between the rear lot line and the main building.
Yard, required rear.
An open space extending the full width of the lot between the rear lot line and the rear setback line, unoccupied and unobstructed from the ground upward except as specified elsewhere in this article.
Yard, side.
An open, unoccupied space on the same lot with a building, situated between the building and sideline of the lot and extending through from the front yard to the required rear yard. Any lot line not the rear line or a front line shall be deemed a sideline.
Yard, required side.
An open space extending from the minimum front yard setback line to the minimum rear yard setback line between the side yard setback line and the nearest side lot line, unoccupied and unobstructed from the ground upward except as specified elsewhere in this article.
Zoning map, official.
The zoning map or maps of the city dated together with all amendments subsequently adopted.
Zoning permit.
A document issued by the building official authorizing buildings, structures, or uses consistent with the terms of this article and for the purpose of carrying out and enforcing its provisions.
(1977 Code, sec. 13-191)
In their interpretation and application, the provisions of this article shall be held to be minimum requirements, adopted for the promotion of the public health, safety, morals, and general welfare. Whenever the requirements of this article are at variance with the requirements of any other lawfully adopted rules, regulations, ordinances, deed restrictions, or covenants, the most restrictive or that imposing the higher standards shall govern.
(1977 Code, sec. 13-171)