Short-term rentals (STRs) in St. Clair County, Illinois, are subject to a regulatory framework that emphasizes safety and public health. These rentals, often referred to locally as "vacation rentals," are primarily legal but require compliance with occupancy permits governed by the St. Clair County Building and Zoning Department. The market supports various property types, with interest in single-family homes and compliant multifamily units, particularly in urban areas attractive to tourists and business travelers alike. While the area sees significant usage from tourists drawn to local attractions and events, business travel is also notable due to proximity to St. Louis. Compliance with occupancy regulations, including a $35 permit fee and regular inspections, is mandatory for property owners. The overall environment is competitive, yet it thrives on both tourism and business travel segments. The governing authority for these regulations is the St. Clair County Building and Zoning Department. For further details, visit the official sites at https://www.co.st-clair.il.us/departments/building-zoning/occupancy-program and https://www.co.st-clair.il.us/county-code.