10-3-3: MINIMUM SIZE OF ZONING DISTRICTS:
No zoning district established by any new zoning ordinance shall be changed or new district established after this chapter is in effect unless the area being considered for change is of the following minimum size:
A-1
Agricultural District
No minimum
R-1
One-Family Dwelling District
15 acres
R-2
One-Family Dwelling District
10 acres
R-3
One-Family Dwelling District
1 acre
R-4
Multiple-Family Dwelling District
1 acre
R-5
Mobile Home Dwelling District
1 acre
B-1
Neighborhood Business District
5 acres
B-2
Central Business District
5 acres
B-3
Highway Business District
5 acres
B-4
Commercial Highway Interchange District
4 acres
B-5
Planned Research Office District
20 acres
I-1
Light Industrial District
10 acres
I-2
General Industrial District
20 acres
I-3
Planned Industrial District
60 acres
S-1
Floodplain And Drainageway District
No minimum
S-2
Slope District
No minimum
S-3
Airport District
No minimum
S-4
Historic buildings District
No minimum
P-1
Planned Unit Development Overlay District
3 - 20 acres (varies)
 
(Ord. 2008-2, 5-27-2008)