SB4061

Illinois SB4061 amends building codes to allow single stairway exits in certain residential buildings.

Illinois SB4061 amends the Counties Code and the Illinois Municipal Code to allow residential buildings with specific safety features to use a single stairway as an exit. Beginning January 1, 2027, counties and municipalities cannot prohibit this if the building has no more than six stories, an automatic sprinkler system, self-closing doors, smoke detection, emergency escape openings, and no more than four units per floor. This change limits home rule powers under the Illinois Constitution.