Springfield, IL Fire Regulations: Smoke Detectors (2026)

Smoke alarm requirements in Springfield are set by the statewide Illinois Smoke Detector Act, 425 ILCS 60/3. Every dwelling unit or hotel must be equipped with at least one approved smoke detector in operating condition within 15 feet of every room used for sleeping purposes, installed on the ceiling at least 6 inches from any wall, or on a wall between 4 and 6 inches from the ceiling. Every single-family residence must have at least one approved smoke detector installed on every story of the dwelling unit, including basements but not including unoccupied attics.

In split-level dwellings, a detector on the upper level suffices for an adjacent lower level less than one full story below, unless an intervening door separates the levels, in which case a detector is required on each level. Newer amendments require 10-year sealed-battery alarms on replacement of older units in homes lacking hardwired systems. Springfield's adopted Chapter 94 fire safety code and International Fire Code provide additional enforcement for new construction and rental properties.