Chapter 19
ZONING*

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Cross references: Buildings and building regulations, ch. 4; planning, ch. 13; roads, driveways, and parking lots, ch. 15; subdivision and land division regulations, ch. 16.

R-1-R	Rural residential.
R-1-S	Suburban residential.
R-1	Single-family residential.
R-2	Multiple-family residential.
R-3	Mobile home park.
RO-1	Restricted office.
C-1	Local business.
C-2	Planned shopping center.
REC	Recreation.
E	Proving ground.
M-1	Light industrial.
M-2	General industrial.
M-3	Extractive industrial.

	Evergreen Tree	Narrow Evergreen	Large Deciduous Tree	Small Deciduous Tree	Large Shrub	Small Shrub
Minimum size	5÷ht	4÷ht.	2"cal.	1.5"cal.	24"ht.	18"ht.
Minimum spacing	10÷	5÷	20÷	8÷	4÷	2÷
Maximum spacing	25÷	15÷	40÷	20÷	10÷	6÷

	Lot Size		Lot Width
District	Minimum	Average	Minimum (feet)	Average (feet)
R-1-R	2 acres	3 acres	165	200
R-1-S	1 acre	1 & 1/2 acres	125	50
R-1	9,600 sq. ft.	11,200 sq. ft.	70	80

COMMON NAME	BOTANICAL NAME	PROBLEM
Boxelder	Acer negundo	Fast growing weak wooded
Cottonwood/Poplar	Populus sp.	Fast growing weak wooded
Silver Maple	Acer saccharinum	Weak wooded, storm damage
Tree of Heaven	Ailanthus altissima	Weak wooded, aggressive
Mulberry	Morus sp.	Litter, aggressive
Poplar/Cottonwood	Populus sp.	Fast growing weak wooded
Willow	Salix sp.	Weak wooded, storm damage
Siberian Elm	Ulmus Pumila	Weak wooded, storm damage

No. of Living Units Per Building	Minimum Distance (feet between buildings)
1 unit and 1 unit	20
1 unit and 2 units	20
1 unit and 3 units	30
1 unit and 4 units	30

2 units and 2 units	20
2 units and 3 units	30
2 units and 4 units	30

3 units and 3 units	30
3 units and 4 units	30
4 units and 4 units	30

	Use	Required Number of Parking Spaces	Per Each Unit of Measure as Follows:
1.	Auditoriums, assembly halls and theaters	1	2 seats based upon maximum seating capacity in the main place of assembly therein, plus 1 space for every 2 employees.
2.	Banks (other than drive-in type), business or professional offices of lawyers, architects, engineers, or similar or allied professions	1	200 square feet of usable floor area.
3.	Barber shops	3	Each barber.
4.	Beauty parlors	4	Each beauty shop operator.
5.	Bowling alleys	8	Each bowling lane.
6.	Churches	1	2 seats, based on maximum seating capacity in the main place of assembly therein.
7.	Dance halls, exhibition halls, pool and billiard halls, skating rinks, lodge halls, assembly halls without fixed seats	1	Each 3 persons based upon maximum occupancy as established by local, county, or state fire, building or health code, or 40 square feet of usable floor area, whichever is greater.
8.	Drive-in banks	4	Each teller window.
9.	Drive-in establishments, drive-in restaurants	1	25 square feet of usable floor space, with a minimum of 40 parking spaces.
10.	Elementary schools, junior high schools, senior high schools	1	2 teachers, employees or administrators and also 1 space for each 10 students in senior high school, in addition to the requirements of the auditorium or assembly hall therein.
11.	Establishments other than drive-in establishments or drive-in restaurants, in which is conducted the sale and consumption on the premises of beverages, food or refreshments	1	Each 3 persons based upon maximum occupancy as established by local, county or state fire, building or health code, or 100 square feet of usable floor area and 1 space for each employee, whichever is greater.
12.	Furniture, appliances, and household equipment repair shops; showroom of a plumber, decorator, electrician or similar trade; clothing and shoe repair, laundry, motor vehicle salesroom, hardware stores, wholesale stores and machinery sales	1	800 square feet of usable floor area, exclusive of the usable floor area occupied in processing or manufacturing for which requirements, see industrial establishments below, plus 1 space for the owner or management, plus 1 space for each two employees.
13.	Golf courses	1	Each 2 employees and/or management personnel, plus 1 space for every 500 square feet of usable floor area in the club house, plus a minimum of 10 parking spaces per hole on the golf course.
14.	Hospitals	1	2 beds.
15.	Hotels, tourist homes, motels	1	Guest bedroom.
16.	Industrial establishments	1	2 employees computed on the basis of the greatest number of persons employed at any one period during the day or night or 550 square feet of floor space, whichever is greater.
17.	Warehouse and storage buildings	1	1 employee computed on the basis of the greatest number of persons employed at any one period during the day or night, or 1 space for every 1,700 square feet of floor space, whichever is greater.
18.	Laundromat and/or dry cleaning center	1	Every 2 washing machines.
19.	Libraries and museums	1	200 square feet of floor space.
20.	Mortuary establishments, funeral homes	1	50 square feet of floor space in the slumber rooms, parlors or individual funeral service rooms.
21.	Motor vehicle car wash
	a. Self-service operation	4	Each motor vehicle wash establishment.
	b. Other than self-service operation	8	Each car wash establishment plus 1 for each employee.
22.	Private clubs, fraternities	1	2 beds, plus 2 additional spaces for owner, management and/or service employees.
23.	Professional offices of doctors and dentists	1	100 square feet of usable floor area.
24.	Residential, single or two-family dwelling	2	Each dwelling unit.
25.	Residential-multiple dwelling on a nonrental basis	2.5	Every 1 dwelling unit.
26.	Retail store, except as otherwise specified herein	1	150 square feet of usable floor space.
27.	Sanitariums, homes for the aged, convalescent homes, children's homes	1	2 beds.
28.	Service garages, auto salesrooms, auto repair, collision or bumping shops	1	800 square feet of usable floor area, plus 1 space for each 2 employees computed on the basis of the maximum number of employees on duty at any time, plus 1 space for each of the owners and/or management on duty at any time, plus 2 spaces for each stall in a collision bumping or painting shop, plus 1 space for each stall or service area or water rack in a servicing or repair shop.
29.	Stadiums and sports arenas	1	4 seats or 8 feet of benches.
30.	Mobile home parks	2	Each mobile home site and 1 for each employee of such park.
31.	Laundromats and coin-operated dry cleaners	1	Each 2 washing or dry cleaning machines.
32.	Automobile service	2	Each lubrication stall or rack and 1 for each gasoline pump.
33.	Pre-schools, nursery schools, day nurseries, child care centers, and private elementary including Montessori schools, operated for a profit or nonprofit	1	Each 350 square feet of usable floor space, plus 1 space for each faculty member, employee or owner, plus 3 passenger vehicle spaces for loading and unloading of children.
34.	Junkyards, salvage yards	1	Each owner or manager, plus 1 space for each employee, plus 1 space for customer parking for each one half acre for the first 5 acres of the property, plus an additional space for each additional 5 acres or part thereof.

Pattern	Maneuvering Lane Width	Parking Space Width	Parking Space Length	Total Width of One Tier of Spaces Plus Maneuvering Lane	Total Width of Two Tiers of Spaces Plus Maneuvering Lane
0° (Parallel Parking)	12 ft.	8 ft.	23 ft.	20 ft.	28 ft.
45°	12 ft.	9 ft.	18.5 ft.	33 ft.	47 ft.
60°	16 ft.	9 ft.	18.5 ft.	35 ft.	54 ft.
90°	26 ft.	9 ft.	18.5 ft.	44.5 ft.	63 ft.

Gross Floor Area in Square Feet	Loading and Unloading Spaces Required in Terms of Square Feet of Gross Floor Area
0 to 2,000	None.
2,000 to 20,000	1 space.
20,000 to 100,000	1 space plus 1 space for each 20,000 square feet in excess of 20,000 square feet.
100,000 to 500,000	5 spaces plus 1 space for each 40,000 square feet in excess of 100,000 square feet.
Over 500,000	15 spaces plus 1 space for each 80,000 square feet in excess of 500,000 square feet.

	Lot Size Requirements				Maximum Height of Building		Minimum Yard Setback° Per Lot in Feet
	Area		Width (In Feet)
Zoning District	t	Min.t	Avg.t	Min.t	In Stories	In Feet	Front	Each Side	Rear	Minimum Floor Area Per Dwelling Unit in Sq. Ft.l	Maximum Lot Coverage in Percent
R-1-R, Rural residentialb-r-u	3 acres	2 acres	200	165s	2	35	35f	20f-e	50f	1,000	15
R-1-S, Suburban residentialr-u	1 1/2 acres	1 acres	150	125q	2	35	35	15e	50	1,000	10
R-1, Single-family residentialv	11,200 sq. ft.c	9,600 sq. ft.	80	70	2	35	30g	10e	30	900	25
R-2, Multiple-family residential		d		100	2	30	50w	50h-w	100	m	30
R-3, Mobile home park		15 acres		400	1 1/2	15	25w	20i-w	20i	–	–
RO-1, Restricted office		1 acre		125	2	25	35y	15x-y	50	–	–
C-1, Local business		1 acre		100	1	20	50y	15j-k-x-y	20j	–	–
C-2, Planned shopping center		25 acres		500	2	30	50y	50j-k-y	50j	n	30
REC, Recreationbb		5 acres		200	–	–	25	25	25	–	–
E, Proving ground		–		–	–	100p	30	20j	40j	–	25
M-1, Light industrial		2 acres		150	2	100	30w	20j-w	40j	–	40
M-2, General industrial		2 acres		150	2	100	40w	30j-w	50j	–	40
M-3, Extractive industrial		160 acres		200	2	40	40	30i-j	50j	–	–

a.	Efficiency....	1 room
b.	One-bedroom apartment....	2 rooms
c.	Two-bedroom apartment....	3 rooms
d.	Three or more bedroom apartment....	4 rooms

	Districts
Duration	R-1, R-1-S, R-2, R-3, R-1-R, REC		RO-1, C-1, M-2, C-2, E, M-1, M-3
Duration as a Fraction (Percentage) of any One Hour Period	Night*	Day*	Night*	Day*
50% or greater	45	50	55	65
More than 10% but less than 50%	50	55	60	70
10% or less	55	65	70	75
Maximum, any duration	65	75	80	80

	Size of Dwelling Unit	Minimum Floor Space Per Dwelling Unit
(1)	Efficiency units....	350 square feet
(2)	One-bedroom unit....	450 square feet
(3)	Two-bedroom unit....	600 square feet
(4)	Three-bedroom unit....	800 square feet
(5)	Plus, for each bedroom over three bedrooms in the dwelling unit....	150 square feet