Accessory Structures in Brown County, WI (2026)

1 county-level rule, plus city-specific rules for 3 cities in Brown County, Wisconsin.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Brown County. If you live within an incorporated city, that city's own rules apply — see the city list below.

ADU Rules

Brown County zoning (Ch. 17) regulates ADUs only in unincorporated areas and the Village of Bellevue. Most Green Bay metro municipalities (Green Bay, De Pere, Ashwaubenon, Howard, Suamico, Hobart) administer their own zoning codes. Wisconsin has no statewide ADU mandate; AB365 (2025 session) proposing one has not been enacted.

accessory-structures/adu-rules

Some Restrictions

Full ordinance details →Official source ↗

Accessory Structures by City in Brown County

3 cities in Brown County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.

Ashwaubenon

2 verified rules • ADU Rules, Shed Rules

De Pere

2 verified rules • ADU Rules, Shed Rules

Green Bay

2 verified rules • ADU Rules, Shed Rules

All Brown County ordinances

See every category we cover for Brown County — parking, noise, fences, fires, animals, pools, and more.

Brown County Ordinance Hub →