Accessory Structures in Green Bay, WI (2026)
2 verified accessory structures rules for Green Bay, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
The City of Green Bay regulates accessory dwelling units under Chapter 44 of the Code of Ordinances (Zoning), adopted under the city's zoning authority in Wis. Stat. Sec. 62.23. Following a December 2025 rewrite of the zoning code (the first major update since approximately 2006), accessory dwelling units are allowed in all residential districts with an approved Conditional Use Permit (CUP). An ADU on the same parcel as a single-family, two-family duplex, or two-family semi-detached dwelling provides complete independent living facilities for one family consistent with the Wisconsin Uniform Dwelling Code. With an approved CUP, the ADU does not count as an additional accessory structure for the lot.
Accessory Dwelling Unit Rules (Green Bay, WI)
Some RestrictionsShed Rules
Sheds in Green Bay are detached residential accessory structures regulated under Section 44-590 and Table 44-4 of the Green Bay Municipal Code. Sheds under 50 square feet are exempt from a building permit but must still meet zoning. Detached sheds in one- and two-family districts must sit behind the principal building (or in the side yard not abutting a street) with a 4-foot side and 4-foot rear setback (2-1/2 feet on narrow lots), a 55-foot front setback, and at least 3 feet between accessory structures.
Shed Rules in Green Bay
Some RestrictionsLooking for Brown County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Green Bay city rules.
Accessory Structures in Brown County →