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HB 5571

Construction: code; single exit stairway in multiple-family dwellings with not more than 6 levels; allow under certain conditions. Amends 1972 PA 230 (MCL 125.1501 - 125.1531) by adding sec. 4j. TIE BAR WITH: HB 5570'26

2025-2026 Regular Session Introduced by Joey Andrews and 14 co-sponsors

HB 5571 lets certain 5–6 level multi-family buildings use a single interior exit stairway if strict occupancy, area, egress, fire alarm, sprinkler, and local fire protection requir

bill ordered enrolled
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Bill Summary · HB 5571

Summary of Bill HB 5571 (2025-2026) — Michigan

Purpose and intent

  • HB 5571 amends the Stille-DeRossett-Hale Single State Construction Code Act (1972 PA 230) by adding new section 4j.
  • The bill authorizes certain multiple-family dwellings to have a single interior exit stairway under a defined set of conditions.
  • It is tied to HB 5570 (as a tie bar), meaning HB 5571 cannot take effect unless HB 5570 (or its Senate equivalent) is enacted.

Key provisions and changes

Allowed configuration

  • Applies to a multiple-family dwelling that:
    • Has more than 4 but not more than 6 levels above grade plane, or has an occupiable roof and more than 3 but not more than 5 levels above grade plane.
    • In addition to the above, the dwelling may have a single interior exit stairway if all conditions are met.

Conditions that must be satisfied

  1. Unit density per level
    • No more than 4 dwelling units on each level.
  2. Floor area
    • Net floor area of each level must not exceed 4,000 square feet.
  3. Exit access travel distance
    • Exit access travel distance must be ≤ 125 feet measured from the most remote point within a level along the natural, unobstructed egress path.
  4. Openings to interior exit stairway enclosure
    • Openings are limited to:
      • Openings needed for exit access into the enclosure from normally occupied spaces.
      • Openings required for egress from the enclosure.
      • Openings to the exterior.
  5. Elevator restriction
    • An elevator must not open into the interior exit stairway enclosure.
  6. Fire alarm and detection systems
    • The dwelling must have:
      • A manual fire alarm system.
      • An automatic smoke detection system that activates an occupant notification system.
      • All systems installed per the building code.
  7. Smoke detectors in common spaces
    • Smoke detectors must be located in common spaces outside of dwelling units, including:
      • Gathering areas, laundry rooms, mechanical equipment rooms, storage rooms, interior corridors, interior exit stairways, and exit passageways.
  8. Automatic sprinklers
    • Automatic sprinkler locations in the interior exit stairway must comply with the NFPA Standard for the Installation of Sprinkler Systems (2025 edition) for combustible stairways, regardless of stair construction type.
  9. Electrical receptacles
    • No electrical receptacle may be located within an interior exit stairway.
  10. Local fire protection and accreditation requirements
    • The dwelling must be located in a city or township served by a fire department, district, or authority that meets:
      • Accreditation by the Commission on Fire Accreditation International (CFACI) (or is accredited but without an active current accreditation).
      • A Public Protection Classification (PPC) of Class 1 or 2 by the Insurance Services Office (ISO).
      • Meets aerial apparatus requirements compatible with the applicable PPC rating.

Relation to HB 5570

  • HB 5570 governs similar provisions but applies to buildings with up to 4 levels above grade plane (or up to 3 levels with an occupiable roof).
  • HB 5571 extends the allowance to buildings with 5–6 levels (or 4–5 levels if there is an occupiable roof).
  • Both bills share identical substantive safety requirements and local fire service accreditation provisions.
  • HB 5571 cannot take effect unless HB 5570 or its Senate counterpart is enacted.

Who/what is affected

  • Affects certain multi-family dwellings that exceed 4 levels but are within the 5–6 level range (or 4–5 levels with occupiable roof per HB 5571).
  • Changes primarily impact building design and egress infrastructure, including:
    • Stairs and enclosure openings
    • Elevator placements
    • Fire alarm, smoke detection, and occupant notification systems
    • Sprinkler requirements within interior exit stairways
    • Electrical receptacle placements
    • Location and conditions tied to local fire protection services and accreditation

Procedural and timeline elements

  • Enactment: The provision takes effect only if HB 5570 (or its Senate version) is enacted into law.
  • Effective date: Not specified within HB 5571 itself; contingent on the passage of the tied bill HB 5570.
  • Fiscal impact: House Fiscal Agency analysis indicates no net fiscal impact on state or local government.

Accessibility and interpretation notes

  • Provisions are technical and reference building codes (construction, fire safety, sprinkler standards) and external fire protection classifications.
  • Applicability depends on specific building height, level count, and per-level occupancy and area constraints, as well as the status of local fire protection authorities.

Compiled from official sources — confirm details with the bill’s official record.

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