Peoria County Planning and Zoning manages permits for unincorporated areas, while incorporated municipalities like the City of Peoria maintain their own independent building departments and permit processes. The county enforces specific floodplain management regulations for properties located within designated Special Flood Hazard Areas.
How this fits with the state
The state authority here is Illinois IDFPR; Illinois Department of Public Health; local building departments. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.