Accessory Structures in Racine County, WI (2026)
2 county-level rules, plus city-specific rules for 1 city in Racine County, Wisconsin.
Verified from official government sources
ADU Rules
Racine County allows one in-law suite as an accessory use in single-family homes across eleven zoning districts, capped at 800 square feet and connected to the main house: never a stand-alone building.
In-Law Suite Rules in Racine County, Wisconsin
Some RestrictionsRacine County Code § 20-1008(e)
In-law suites (herein "suite") may be allowed as an accessory use to a single-family residence located in the R-1, R-2, R-2S, R-3, R-3A, R-4, R-5, R-5A, A-1, A-2 and C-2 zoning districts, subject to the following: (1) Up to two (2) family members related by blood or marriage to the family occupying the principal structure may reside in the suite and must be allowed unrestricted access to the co...
Shed & Carport Rules
A shed under 36 square feet skips Racine County's zoning permit, but every accessory building on a lot counts toward an aggregate footprint cap, from 720 square feet on small lots up to a percentage of acreage on larger ones.
Shed Permit Thresholds in Racine County
Some RestrictionsRacine County Code § 20-1115(a), (c)
any detached accessory structure less than thirty-six (36) square feet in area is exempt from the requirement for obtaining a zoning permit... The aggregate total footprint area for all accessory structures shall not exceed the following square footage for the stated lot size... < 10,000 square feet lot = 720 square feet... ≥ 10 acre lot = five (5) percent of lot area.
Accessory Structures by City in Racine County
1 cities in Racine County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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