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Mukwonago Town City Zoning Code

Appendix C

Dimensional standards for lots

Zoning District Minimum Lot
Area [1,2]
Lot Density Minimum Lot Width [1] Minimum Residen-
tial Living Area
Maximum Floor Area of Attached Garage [3] Maximum Floor Area of Detached Accessory Buildings [3,4,5] Maximum Building Coverage [1] Maximum Height [12,13,14] Minimum
Setback [6]
Minimum Offset [1,6,8,9,10] Minimum
Open Space [1]
Maximum Number of Detached Accessory Buildings [19]
Section in Zoning Code s. 36-712 s. 36-714 s. 36-715 s. 36-717 s. 36-718 s. 36-719 s. 36-720 s. 36-721 s. 36-722 s. 36-723 s. 36-724 s. 36-731
Conservancy (C-1) No restriction Not applicable No restriction Not applicable Not applicable Not applicable Not applicable Principal: 60 feet
Accessory: 60 feet
50 feet 50 feet Not applicable Not applicable
Agricultural (A-1) 3 acres 3.2 acres 200 feet See note 15 See note 20 1,300 square feet [11] 10 percent Nonfarm principal: 35 feet
Nonfarm accessory: 18 feet
Farm: 60 feet or 100 feet when the setback and offset are equal to or exceed the height of the structure
50 feet 20 feet 2 acres per family 2
Rural Home (RH) 5 acres 5 acres 300 feet See note 15 See note 20 2,000 square feet [11] 10 percent Principal: 35 feet
Accessory: 18 feet
50 feet 50 feet 4 acres per family 2
Suburban Estates (SE) 3 acres 3.2 acres 200 feet See note 15 See note 20 1,300 square feet [11] 10 percent Principal: 35 feet
Accessory: 18 feet
50 feet or 35 feet if lot is in a residential subdivision established after January 1, 2018, and the lot is served by a town road 30 feet 2 acres per family 2
Residential (R-1) 1 acre 1 acre 150 feet See note 15 See note 20 720 square feet [11] 10 percent Principal: 35 feet
Accessory: 18 feet
50 feet or 35 feet if lot is in a residential subdivision established after January 1, 2018, and the lot is served by a town road 20 feet 30,000 square feet per family 2
Residential (R-2) 30,000 square feet 30,000 square feet 120 feet See note 16 See note 20 500 square feet [11] 15 percent Principal: 35 feet
Accessory: 15 feet
50 feet 20 feet 25,000 square feet per family 2
Local Business (B-2) 20,000 square feet 30,000 square feet 120 feet See note 17 See note 20 1,000 square feet [11] 50 percent Principal: 35 feet
Accessory: 15 feet
50 feet Commercial: 10 feet
Residential: 20 feet
15,000 square feet per family 2
Public (P-1) No restriction Not applicable No restriction Not applicable Not applicable Not applicable Not applicable Principal: 60 feet
Accessory: 60 feet
50 feet 50 feet Not applicable No restriction

 

Notes:

1.

The town board may modify the lot size, lot width, building coverage, offset, and open space requirements pursuant to section 36-732 if the lot is served by a municipal or municipally-approved communal wastewater system or water system.

2.

Some land uses may only occur on lots that are larger than the minimum lot area listed in this table. Such land uses are listed in Appendix B.

3.

The plan commission may allow more floor area pursuant to section 36-718.

4.

Pursuant to article V, the town board may designate an existing building as a rural accessory building, which is not included in the total. In order to qualify as a rural accessory building, the subject property must be 3 acres or larger.

5.

Temporary buildings, if allowed, are counted as a building for the purpose of this restriction, unless specifically exempted.

6.

In addition, there are standards for development within 50 feet of the EC overlay district and 75 feet of the conservancy (C-1) district. See sections 36-726 and 36-727, respectively.

7.

Reserved.

8.

In the case of any lot of record which has a minimum average width of less than 120 feet, the side lot offset may be reduced proportionately to the ratio between the actual minimum average width and 120 feet, provided that no offset shall in any case be less than 10 feet. Exceptions to these offsets may be permitted for detached accessory buildings on lots of 100 feet in width or less which may be reduced to 5 feet; provided, that no detached accessory building shall be located closer than 10 feet to any structure used for residential purposes. Further reduction in offsets of detached accessory buildings to less than 5 feet must be approved by the plan commission; but in no case shall the offset be reduced to less than 3 feet. Attached open decks and patios shall be permitted to within 40 percent of the limits established in this subsection.

9.

The offset may be reduced on lots 1.5 acres or less for one detached accessory building, which is less than 200 square feet to a minimum of 5 feet from the lot line, unless otherwise regulated under any other provisions of this chapter.

10.

Some land uses may have more restrictive offset requirements. Examples include hobby kennels and household livestock. Such land uses are listed in Appendix B.

11.

The maximum floor area is increased by 50 square feet for every one-half acre of land that the subject property exceeds the district minimum lot size.

12.

The following are exempt from the height regulations of all districts, but are subject to all other applicable regulations: (1) chimneys and flues, (2) accessory farm buildings, not to exceed 60 feet in height, on lots of 3 acres or more in area, (3) electrical transmission and distribution facilities, and (4) roof-mounted television and radio receiving antennas not exceeding 10 feet in height from the roof and roof-mounted licensed amateur radio operator antennas not exceeding 10 feet in height from the roof.

13.

Pursuant to the procedures and requirements for special exceptions in article V of this chapter, the plan commission may exempt the following from the height regulations of all districts: cooling towers, elevator bulkheads, fire towers, monuments, penthouses, stacks, scenery lofts, tanks, water towers, ornamental towers, spires, masts, free standing towers, roof-mounted licensed amateur radio operator antennas 10 feet or more in height from the roof, aerial and necessary mechanical appurtenances.

14.

Pursuant to the procedures and requirements in article V of this chapter, the plan commission may grant a special exception to exceed the stated maximum height for an accessory building provided the setback is increased one foot for each additional foot in height up to a maximum of 10 additional feet. The plan commission may require screening to break up the view of the building from adjacent properties or from a public road.

15.

Minimum of 900 square feet on first floor and total floor area based on number of bedrooms as follows: one bedroom: 1,200 square feet, two bedrooms: 1,300 square feet, three bedrooms: 1,400 square feet, four or more bedrooms: 1,500 square feet. The minimum total is increased by 200 square feet for any building not having a basement of at least 300 square feet in area.

16.

Minimum of 900 square feet on first floor and total floor area based on number of bedrooms as follows: one bedroom: 1,000 square feet, two bedrooms: 1,100 square feet, three bedrooms: 1,200 square feet, four or more bedrooms: 1,400 square feet. The minimum total is increased by 200 square feet for any building not having a basement of at least 300 square feet in area.

17.

Minimum of 800 square feet on first floor and total floor area based on number of bedrooms as follows: one bedroom: 900 square feet, two bedrooms: 1,100 square feet, three bedrooms: 1,200 square feet, four or more bedrooms: 1,400 square feet. The minimum total is increased by 200 square feet for any building not having a basement of at least 300 square feet in area.

18.

Reserved.

19.

Pursuant to article V, the town board may designate an existing building as a rural accessory building, which is not included in the total. In order to qualify as a rural accessory building, the subject property must be 3 acres or larger.

20.

One-story residence: 50 percent of floor area on first floor; bi-level residence: 60 percent of floor area of the first floor entirely above grade; two-story residence: 70 percent of floor area on first floor

(Ord. No. 2020-O-48, § 1(Exh. A), 9-16-2020; Ord. No. 2021-O-55, § 11, 7-14-2021)