Adoption of Standardized International and State Codes
Most jurisdictions require compliance with internationally recognized building codes that are adopted and modified by state or local governments. These codes set minimum standards for safety, structural integrity, and habitability.

• Commonly adopted codes include the International Building Code (IBC), International Fire Code (IFC), and International Energy Conservation Code (IECC)
  
• State-specific building codes may modify or add requirements to the international standards
  
• Codes cover construction, electrical, plumbing, mechanical, fire protection, accessibility, and energy efficiency
  

Project Type and Use Determine Applicable Code Sections
The building codes that apply depend on the type of development (e.g., commercial, industrial, mixed-use) and the intended occupancy classification. Each use type has its own set of design, safety, and performance requirements.

• Industrial facilities must comply with provisions for structural loads, hazardous materials handling, and ventilation
  
• Commercial developments must meet public accessibility and fire egress standards (ADA and NFPA 101)
  
• Green building and energy efficiency codes may be mandatory depending on jurisdiction (e.g., Title 24 in California)
  

Enforced Through Permitting, Inspections, and Final Approvals
Building codes are enforced by the local building department through the permit and inspection process. Plans must be reviewed and approved before construction begins, and multiple inspections are required throughout the project.

• Construction documents must be prepared by licensed professionals (e.g., architects, engineers)
  
• Plan review ensures compliance before permits are issued
  
• Field inspections verify that work meets code throughout construction, culminating in a certificate of occupancy