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

The City of Bloomington added a carbon monoxide detector mandate to its 2018 International Property Maintenance Code adoption through the local amendments at Bloomington City Code § 45-201 (Sec. 704.5). The rule applies to all residential occupancies, not only rentals, whenever the building relies on the combustion of fossil fuel, natural gas, propane, or oil, for heat, cooking, ventilation, or hot water, or whenever the structure is directly connected to a garage, since a running vehicle or gas appliance in an attached garage is the classic carbon monoxide source. The detector has to sit within 15 feet of every room used for sleeping, and it has to be installed and maintained, meaning a dead battery or a disconnected unit is itself a violation, not just the absence of a detector.

This amendment sits alongside the City's rental inspection program: buildings that fall into the rental inspection pool are inspected for compliance with all applicable codes, including Section 704.5, and a missing or non-functioning detector found during a rental inspection, or a Property Maintenance inspection triggered by a tenant complaint, is enforced the same as any other Property Maintenance Code violation under Section 106.4's general penalty. Owners of single-family rentals, duplexes, and multi-unit buildings alike are responsible for making sure every unit's detector is in place and working, and the Department of Economic & Community Development is the office that inspects for it and issues the violation notice when one is missing.