pre-flight
Code library

Chicago, IL
adopted code.

City of Chicago Title 17 residential zoning rules Pre-Flight can check.

135 adopted sections loaded — Zoning · GIS

Rules Pre-Flight can check

Chicago RS1/RS2/RS3 residence standardsLot, FAR, height, and setbacks→

Official source

Chicago adopted code

These pages explain what Pre-Flight checks. Always confirm the adopted text on the city's official site.

Check a set against the code →

Pre-Flight is not a permit, not legal advice, and not a substitute for a licensed design professional or the authority having jurisdiction. The city still decides.