Accessory Structures in New Berlin, WI (2026)
2 verified accessory structures rules for New Berlin, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
New Berlin restricts accessory dwelling units (ADUs) under Chapter 275 (Zoning) of the Municipal Code, adopted by Common Council Ordinance No. 2489 on June 17, 2013, under the city's zoning authority in Wis. Stat. Sec. 62.23. The Code defines an 'accessory dwelling' narrowly as a second dwelling unit integrated with a business on the same lot, and accessory dwelling units / living quarters are not permitted within accessory buildings (detached garages, sheds, etc.). Detached, freestanding ADUs in residential districts are not a recognized permitted use. Property owners seeking a second dwelling must work through the Department of Community Development for a use determination, conditional use, or rezoning.
Accessory Dwelling Unit Rules (New Berlin, WI)
Heavy RestrictionsShed Rules
Sheds in New Berlin are accessory buildings under Section 275-42 of the New Berlin Zoning Code. Sheds 144 square feet or less may be located only in the side or rear yard, must be a minimum of 5 feet from all property lines if in the rear yard, must meet the underlying zoning district setbacks if in the side yard, and must be placed on a concrete slab, patio block, asphalt, polycarbonate base, or pressure-treated wood floor. A minimum of 10 feet of separation is required between the shed and any other structure (5 feet with proper fire separation approved by the Building Inspector).
Shed Rules in New Berlin
Some RestrictionsLooking for Waukesha County county-wide rules?
County ordinances apply to unincorporated areas and may supplement New Berlin city rules.
Accessory Structures in Waukesha County →