Accessory Structures in Wauwatosa, WI (2026)
2 verified accessory structures rules for Wauwatosa, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Wauwatosa allows accessory dwelling units (ADUs) under Title 24 (Zoning Code) of the Wauwatosa Municipal Code. The original ADU ordinance was adopted by the Common Council in 2019. ADUs may be detached structures, additions to a home or garage, or conversions of an existing portion of a home or garage. Properties must be in eligible residential zoning districts. Beginning in 2025, the City offers a limited number of $25,000 forgivable loans to qualifying homeowners building ADUs. Zoning approval and a building permit are required, administered by the Planning Division and the Building Safety Department.
Accessory Dwelling Unit Rules (Wauwatosa, WI)
Some RestrictionsShed Rules
Wauwatosa allows residential sheds with a 1.5-foot minimum side and rear setback (5 feet from an alley) under Title 24 zoning. Sheds 100 square feet or smaller are exempt from a building permit but still must meet zoning setbacks. Maximum height is 16 feet, and total accessory building coverage cannot exceed 12 percent of the lot.
Shed Rules in Wauwatosa
Few RestrictionsLooking for Milwaukee County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Wauwatosa city rules.
Accessory Structures in Milwaukee County →