Establishes the "Missouri Building Codes Act"

This bill creates the "Missouri Building Codes Act" to establish a unified set of standards for building construction, electrical work, plumbing, fire prevention, and other related systems across the state. It defines key terms such as "authority having jurisdiction" to include counties, fire protection districts, and municipalities, and mandates that new state facilities adhere to these codes. The legislation allows local jurisdictions to adopt these codes by reference rather than rewriting them entirely and requires the Missouri Building Codes Commission to begin implementing the new standards two years after the bill takes effect.