A. 
Base districts. For the purpose of this chapter, present and future, provision is hereby made for the division of the City of Onalaska into the following base zoning districts:
1. 
A-1 Agricultural District.
2. 
R-1 Low-Density Residential District.
3. 
R-2 Low-Medium Density Residential District.
4. 
R-3 Medium-Density Residential District.
5. 
R-4 High-Density Residential District.
6. 
R-MMH Manufactured and Mobile Home District.
7. 
B-1 Neighborhood Business District.
8. 
B-2 Community Business District.
9. 
B-3 Regional Business District.
10. 
MU-N Mixed-Use Neighborhood District.
11. 
MU-C Mixed-Use Community District.
12. 
MC Medical Campus District.
13. 
I-1 Light Industrial District.
14. 
I-2 Heavy Industrial District.
15. 
P-1 Public and Semi-Public District.
16. 
P-2 Park and Open Space District.
B. 
Overlay districts. In addition to the base zoning districts above, the following overlay districts have been established.
1. 
Design overlay districts:
a. 
PUD Planned Unit Development Overlay District.
b. 
D-RN Downtown Residential Neighborhood Overlay District.
c. 
D-PUD Downtown Planned Unit Development Overlay District.
d. 
PCID Planned Commercial Industrial Overlay District.
e. 
AOZD La Crosse Municipal Airport Overlay Zoning District.
2. 
Natural and historic resource protection overlay districts:
a. 
FP Floodplain Protection Overlay District.
b. 
BP Bluffland Protection Overlay District.
c. 
SP Shoreland Protection Overlay District.
d. 
WP Wellhead Protection Overlay District.
e. 
HP Historic Preservation Overlay District.
A. 
The City of Onalaska is hereby divided into base zoning districts as shown upon the map designated as the Base Zoning Map of the City of Onalaska, updated annually, and all applicable amendments thereto and made a part of this chapter.[1]
[1]
Editor's Note: The Base Zoning Map is on file in the City offices.
B. 
In addition to base zoning districts, the UDC establishes a number of overlay zoning districts which may be applied to applicable portions of the City of Onalaska. These overlay zoning districts may include but are not limited to natural and historic resource protection, airport land and airspace protection, and planned unit development. The overlay zoning districts are shown on the Overlay Zoning Map of the City of Onalaska, updated annually, and all applicable amendments thereto and made a part of this chapter.[2]
[2]
Editor's Note: The Overlay Zoning Map is on file in the City offices.
C. 
The Base and Overlay Zoning Maps and all the notations, references and other information shown thereon are a part of this UDC and shall have the same force and effect as if the matters and information set forth by said maps were fully described herein.
D. 
The Base and Overlay Zoning Maps shall be properly attested and kept on file along with the text of the UDC in the office of the City Engineer of the City of Onalaska.
A. 
The district boundaries shall be determined by measurement from and as shown on the Base and Overlay Zoning Maps, and in case of any questions as to the interpretation of such boundary lines, the Plan Commission shall interpret the maps according to the reasonable intent of this UDC.
B. 
Where uncertainty exists as to the boundaries of districts as shown on the Base and Overlay Zoning Maps, the following rules shall apply:
1. 
Boundaries indicated as approximately following the center lines of streets, highways or alleys shall be construed to follow such center lines.
2. 
Boundaries indicated as approximately following platted lot lines shall be construed to following such lot lines.
3. 
Boundaries indicated as approximately following City boundaries shall be construed as following municipal boundaries.
4. 
Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.
5. 
Boundaries indicated as following shorelines shall be construed to follow such shorelines and, in the event of change in the shoreline, shall be construed as moving with the actual shoreline; boundaries indicated as approximately following the center line of streams, rivers, canals, lakes or other bodies of water shall be construed to follow such center lines.
6. 
Boundaries indicated as parallel to or extensions of features indicated in the preceding shall be so construed. Distances not specifically indicated on the Base and Overlay Zoning Maps shall be the scale of the maps.
A. 
Vacation of public streets and alleys shall cause the land vacated to be automatically placed in the same district as the abutting side to which the vacated land reverts.
A. 
Recommendations regarding annexations to, or consolidations with, the City subsequent to the effective date of this Title shall be placed into the appropriate district by the Zoning Administrator based on the guidance of the Comprehensive Plan unless the application requests consideration of the land being placed into another district. Requests for annexation shall include consideration and recommendation by the Plan Commission and approval by the Common Council following the procedure set forth in Section 13.05.46.
A. 
In any residential district, a one-family detached dwelling and its accessory structures may be erected on any legal lot or parcel of record in the Office of the La Crosse County Register of Deeds office before November 17, 1969, that has been deemed to be substandard due to lack of conformance with lot dimension or site dimension standards.
B. 
All the district requirements shall be complied with insofar as practical but shall not be less than the following:
1. 
Lot.
a. 
Width: minimum 30 feet.
b. 
Area: minimum 4,000 square feet.
2. 
Building.
a. 
Area: minimum 1,000 square feet.
b. 
Height: maximum 30 feet.
3. 
Yards.
a. 
Street: minimum 25 feet; the second street yard on corner lots shall not be less than 10 feet.
b. 
Rear: minimum 25 feet.
c. 
Side: minimum 16% of the frontage, but not less than five feet.
A. 
Height. The districts' building height limitations stipulated elsewhere in this chapter may be exceeded, but such modification shall be in accord with the following:
1. 
No structure shall exceed the height restrictions established on the map entitled "Height Limitation Zoning Map," which is part of the La Crosse Municipal Airport Overlay Zoning District, as described in Section 13.02.36C.
2. 
Architectural projections, such as spires, belfries, parapet walls, cupolas, domes, flues and chimneys are exempt from the height limitations of this chapter.
3. 
Special structures, including but not limited to elevator penthouses, gas tanks, radio and television receiving antennas, manufacturing equipment and necessary mechanical appurtenances, cooling towers, fire towers, substations, and smoke stacks are exempt from the height limitations of this chapter.
4. 
Essential services, utilities, water towers, electric power and communication transmission lines are exempt from the height limitations of this chapter.
5. 
Communication structures, such as radio and television transmission and relay towers, aerials and observation towers shall not exceed in height three times their distance from the nearest lot line.
6. 
Agricultural structures, such as barns, silos and windmills, shall not exceed in height twice their distance from the nearest lot line.
B. 
Yards. The yard requirements stipulated elsewhere in this chapter may be modified as follows:
1. 
Uncovered stairs, landings and fire escapes may project from a structure up to six feet into any yard, provided such projection is not closer than three feet to any lot line.
2. 
Architectural projections, such as chimneys, flues, sills, eaves, belt courses and ornaments, may project into any required yard, but such projection shall not exceed two feet into a required side yard nor four feet into a required front yard.
3. 
Essential services, utility electric power and communication transmission lines are exempt from the yard and distance requirements of this chapter.
4. 
Landscaping and vegetation are exempt from the yard requirements of this chapter, with the exception that any landscaping or vegetation shall be subject to the restrictions in Chapter 03, Division 3.