Bill > HB5570

This bill amends the Stille-DeRossett-Hale single state construction code act to allow multiple-family dwellings with specific characteristics to have a single interior exit stairway under certain conditions, aiming to modernize building codes. "Multiple-family dwellings" refers to buildings with multiple separate housing units, and "grade plane" is a reference point used in building codes to determine the number of stories. The bill permits a single interior exit stairway if the dwelling has no more than four levels above grade plane (or three if it has an occupiable roof), not more than four units per level, and each level's net floor area does not exceed 4,000 square feet. Additionally, the distance a person would need to travel to reach an exit (exit access travel distance) must be no more than 125 feet. The bill also specifies limitations on openings into the stairway enclosure, prohibits elevators from opening into it, and mandates a manual fire alarm system with an automatic smoke detection system that activates an occupant notification system, all installed according to the building code. Smoke detectors are also required in common areas outside of dwelling units, and sprinkler system requirements for the interior exit stairway must comply with standards for combustible stairways, even if the stairway itself is not combustible. Finally, no electrical receptacles are allowed within the interior exit stairway.

Government Affairs

https://legislature.mi.gov/Bills/Bill?ObjectName=2026-HB-5570