Which aspect is primarily regulated by building codes?

Building codes primarily regulate the structural and mechanical features of buildings to ensure safety, functionality, and accessibility. These codes provide a framework for designing and constructing buildings that can withstand natural forces such as earthquakes and wind, support necessary loads, and comply with safety standards. They cover essential elements such as fire safety, building materials, plumbing, electrical systems, and HVAC (heating, ventilation, and air conditioning) systems.

While other aspects like financial transactions, interior design aesthetics, and employee safety practices are important in their own right, they are governed by different regulations or standards. Financial transactions fall under financial and commercial laws, interior design aesthetics may be subject to personal preference and trends, and employee safety practices are typically regulated by occupational health and safety laws. Therefore, the regulation of structural and mechanical features is the central focus of building codes, making this answer the most accurate.