Accessory Structures in Oshkosh, WI (2026)
2 verified accessory structures rules for Oshkosh, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
The City of Oshkosh Zoning Ordinance (Chapter 30 of the Municipal Code) does not contain a dedicated accessory dwelling unit (ADU) section. Under Article III (Land Use Regulations) and the city's land use tables, dwelling units are regulated by district as Single-Family, Two-Family, or Multi-Family uses; an additional independent dwelling unit on a single-family lot is generally not a listed permitted use. Property owners interested in a second unit should consult Oshkosh Planning Services to determine whether the proposal is treated as a conversion to a Two-Family Dwelling, an addition to the principal dwelling, or a separate accessory structure under Article IV. Oshkosh's zoning authority derives from Wis. Stat. Sec. 62.23. Applications, brochures, and the current Chapter 30 articles are posted at oshkoshwi.gov Planning Services.
Accessory Dwelling Unit Rules (Oshkosh, WI)
Heavy RestrictionsShed Rules
Sheds in Oshkosh are detached accessory structures regulated by Chapter 30 (Zoning Ordinance) of the Oshkosh Municipal Code, administered by the Planning Services Division at 215 Church Avenue. A detached accessory structure may not exceed 800 square feet, must be located only in the rear yard or side yard (never the front yard), and must sit at least 5 feet from the principal building unless built to fire-rating standards. Building permits for sheds and detached garages are administered by Inspection Services.
Shed Rules in Oshkosh
Some RestrictionsLooking for Winnebago County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Oshkosh city rules.
Accessory Structures in Winnebago County →