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 allows accessory dwelling units only inside the B-2, B-3 and B-5 business districts attached to the business, plus attached 'in-law suite' family dwelling units in agricultural and single-family districts, capped at 50% of the principal home's living space and two occupants under Sec. 275-42 C.
New Berlin Accessory Dwelling and In-Law Suite Rules
Significant RestrictionsNew Berlin Code of Ordinances § 275-42 C
C.Accessory dwelling units.(1)Residential quarters may be allowed in the B-2, B-3 and B-5 Districts, provided that the following regulations are met:(a)The accessory dwelling is located in the same building as the business;(b)The accessory dwelling shall meet all minimum floor area requirements of the Rm-1 Zoning District;(c)Adequate off-street parking for the occupant and visitors is provided ...
Shed & Carport Rules
New Berlin treats sheds of 144 square feet or less as a distinct accessory building class under Sec. 275-42 B(2): they may sit in the side or rear yard, need a five-foot setback in the rear, and must rest on a concrete slab, patio block, asphalt or pressure-treated wood floor.
New Berlin Shed Size, Setback and Pad Rules
Some RestrictionsNew Berlin Code of Ordinances § 275-42 B(2)
(2)Accessory buildings 144 square feet or less (includes gazebos, pavilions/covered patios (detached), permanent greenhouses, playhouses, pool houses, and sheds).(a)Size.[1]Square footage. Square footage shall be based on the first-floor footprint. Eaves up to 24 inches are excluded from this measurement. ... (c)Location.[1]Yards. May be located in the side or rear yard.[2]Setbacks. Setbacks ar...
Looking for Waukesha County county-wide rules?
County ordinances apply to unincorporated areas and may supplement New Berlin city rules.
Accessory Structures in Waukesha County →