Safety codes are provincial regulations establishing minimum standards for construction and installation of building systems to protect public safety. Major safety codes cover buildings (structural, fire safety), electrical systems, plumbing, gas installations, elevators, and fire protection. While codes are set provincially, municipalities typically enforce them through permit requirements and inspections. Safety codes officers (inspectors) verify that work complies with applicable codes. Codes are regularly updated to reflect new knowledge, technologies, and hazards. National model codes (like the National Building Code) are adopted and sometimes modified by provinces. Code compliance is required regardless of who does the work—contractors and homeowners alike must meet standards.