Cook County, IL Right to Farm: Agricultural Zoning Protection (2026)

Section 4.1.1 describes the R-1 Single-Family Residence District as intended "to provide for estate-type single-family residential development on lot sizes adequate to allow individual wells and sewage disposal systems," creating "an environment that allows a mixture of agricultural uses and homes on lots larger than typical urban-type residential areas," while "all commercial activities are prohibited, except for selected recreation and sanitary uses." Section 4.1.3.F then lists "Agricultural land and buildings", agricultural uses, greenhouses without retail sales, and nurseries without retail sales, as a permitted use category, meaning no special use permit is needed to farm the land.

Any permitted or special use in R-1 requires a minimum lot area of five acres under § 4.1.8.A.1, the same threshold the ordinance uses for agricultural buildings in the county's commercial districts. Roadside stands "for the display and sale of agricultural products only, where the principal use is agriculture" are separately allowed as an R-1 accessory use under § 4.1.6.N. Cook County's code does not contain a standalone nuisance-immunity "right-to-farm" statute of its own; the protection here is structural, agriculture is a listed by-right use in the district built to hold it, and ordinary commercial development is excluded from that same district.

Commercial districts C-3 and C-4 separately classify "Agricultural buildings and structures" with a five-acre minimum lot, a 100-foot front-yard setback (rather than the usual 30 feet), and a 50-foot transitional yard against adjacent residential lots (§§ 5.3.8.C, G.5).