Chicago, IL Fire Regulations: Smoke Detectors (2026)

Under Chicago Building Code Sections 13-196-100 through 13-196-160 and 13-64-120 through 13-64-151, all existing residential units must be equipped with approved smoke alarms. At least one smoke alarm is required on every story or level of the dwelling, including basements. A smoke alarm is required outside of and within 15 feet of each room used for sleeping. For buildings constructed or significantly remodeled in 2018 or later, an additional smoke alarm is required inside each bedroom. Alarms must be installed on the uppermost ceiling at least 4 inches from any wall, or on a wall 4 to 12 inches below the ceiling. A 2021 amendment (effective Jan 1, 2022 for landlord-installed alarms; Jan 1, 2023 for occupant-installed alarms) requires new or replacement alarms to be sealed, non-removable, 10-year-battery units (or hardwired). MCC 13-64-190 requires carbon monoxide alarms in every residential unit that contains fuel-burning equipment or has an attached garage; alarms must be within 40 feet of every sleeping room (state standard 425 ILCS 60). Combined smoke/CO units are permitted. The owner is responsible for testing and maintaining alarms tied to a building fire alarm system; tenants are responsible for routine testing within their own units (MCC 13-196-140).