The Business and Professional Licensing Administration regulates the practice of approximately 72,000 individuals in professions and trades as varied as plumbers, accountants and real estate agents. Working through 12 regulatory boards, BPLA processes applications, administers examinations, issues licenses, and maintains the District's official licensure records. Additionally, BPLA regulates commercial activity in the District and issues business licenses for 127 categories. It registers corporations and partnerships, and inspects and certifies weighing and measuring devices. BPLA also acts as the State Agency for Disability Affairs.