MI HB4689

Allows installation of temporary door locking devices or systems in school buildings as a security measure, with specific technical and operational requirements.

Requires devices to be portable and not permanently affixed, capable of being engaged from inside without opening the door, and able to be unlocked from outside by trained personnel.

Prohibits installation in rooms with capacity over 50 people or on exterior corridor doors, and requires compliance with Michigan's single state construction code and fire prevention codes.

Mandates school administrators obtain plan review approval, permits, and written approval from enforcing agencies before use, and provide staff training on device operation.

Exempts temporary door locking device installation from standard construction project cost thresholds and architectural requirements, allowing installation in any school building regardless of size or remodeling costs.