Cook County only exercises jurisdiction over unincorporated areas; the vast majority of the county is incorporated and managed by individual municipal building departments. Unincorporated areas are subject to specific county zoning ordinances and building codes, with additional review required for properties located within the Cook County Floodplain Management Ordinance zones.
Cook County enforces a specific Stormwater Management Ordinance that requires a separate permit for any development that alters drainage or increases impervious surface area in unincorporated areas.
Cómo encaja con el estado
La autoridad estatal aquí es Illinois IDFPR; Illinois Department of Public Health; local building departments. El expediente del condado no la reemplaza — añade la oficina de permisos, las reglas locales y el camino real de presentación.
Fuente · City-by-city; Chicago and 134 other municipalities run independent permit portalsÚltima verificación · 05 / 2026