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

4. 5 applies to 'all residential occupancies,' a broader sweep that covers single-family homes as much as multi-unit rentals. The trigger for the requirement is mechanical, not structural: any residential building that is directly connected to a garage, or that relies on combustion of fossil fuel for heat, ventilation or hot water, must have a carbon monoxide detector within 15 feet of every room used for sleeping. That 15-foot radius means a single detector placed in a hallway can often cover two adjacent bedrooms, but a house with bedrooms on opposite ends of a floor plan or on separate stories will need more than one unit to keep every sleeping room within range.

A home heated entirely by electric baseboard with no attached garage and no gas appliances falls outside the section's trigger conditions, since the rule is written around fossil-fuel combustion and garage connection rather than applying blanket-wide to every residence in the city. 1, which requires all fire detection systems, devices and equipment to be kept in operable condition at all times.