Accessory Structures in Waukesha, WI (2026)
1 verified accessory structures rules for Waukesha, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
Shed & Carport Rules
Waukesha caps detached sheds and accessory buildings at one story and 720 square feet total, dropping to 150 square feet if the house already has an attached garage, per Municipal Code §16.19. They can cover no more than 20% of the rear yard, must sit at least 4 feet from any other building and 2 feet from a lot line, and need a building permit under §16.03.
Shed and Accessory Building Rules in Waukesha
Some RestrictionsWaukesha Municipal Code § 16.19
General. Accessory buildings shall not exceed a height of one story and, when accessory to a one or two family residence, shall not exceed a floor area of 720 sq. ft. in aggregate, unless the residence already has an attached garage, in which case detached accessory buildings shall not exceed a floor area of 150 sq. ft. in aggregate. All accessory buildings shall occupy no more than 20% of the ...
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County ordinances apply to unincorporated areas and may supplement Waukesha city rules.
Accessory Structures in Waukesha County →