Accessory Structures in Winnebago County, WI (2026)

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

Verified from official government sources

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

ADU Rules

Winnebago County administers zoning in unincorporated towns under Wis. Stat. §59.69. The cities of Oshkosh, Neenah, Menasha, and Appleton (the small Winnebago portion) and incorporated villages zone independently. Wisconsin has no statewide ADU mandate; 2025 Assembly Bill 449 proposing one is not enacted.

accessory-structures/adu-rules

Some Restrictions

Full ordinance details →Official source ↗

Accessory Structures by City in Winnebago County

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

Menasha

2 verified rules • ADU Rules, Shed Rules

Neenah

2 verified rules • ADU Rules, Shed Rules

Oshkosh

2 verified rules • ADU Rules, Shed Rules

All Winnebago County ordinances

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

Winnebago County Ordinance Hub →