Cicero, IL Building Safety: Carbon Monoxide Detectors (2026)

Sec. 42-31, titled 'Smoke and Carbon Monoxide Detectors in Residential or Mixed Occupancy Buildings,' requires every building of residential or mixed occupancy with any residential units to be equipped with approved, operable detectors in the manner the section prescribes. The carbon monoxide piece of that mandate became effective April 1, 2005, per subsection (g), layered onto the smoke detector placement rules already in force: at least one detector per living level, installed on the ceiling at least six inches from any wall, or on a wall between six and twelve inches from the ceiling, and within 15 feet of every room used for sleeping.

Multiple dwellings and mixed-occupancy buildings must also carry a detector at the top of every interior stairwell. Required units must meet Underwriters' Laboratories Standard UL 217 or the applicable Electrical Code provisions. A building fully protected throughout by an approved automatic sprinkler system is exempt from the section. It is separately unlawful to remove batteries or otherwise disable a required detector, except when a building owner, manager or agent is doing scheduled battery replacement or repair. 00 under subsection (h).