Public Law, Chapter 553 (LD 1744):
For newly constructed and converted hotels, motels, inns, bed and breakfasts, CO detectors are required to be installed. In addition, fraternity houses, sorority houses, and dormitories affiliated with private or public schools or private or public postsecondary institutions must install CO detectors in newly constructed, restored, or converted structures. (Effective date: August 1, 2012)
LD 623:
Existing lodging establishments, dormitories and care facilities must have CO detectors. (Effective January 2016)