The Architect's Handbook of Professional PracticeThe American Institute of Architects (AIA) Since 1857, the AIA has represented the professional interests of America's architects. As AIA members, over 80,000 licensed architects, emerging professionals, and allied partners express their commitment to excellence in design and livability in our nation's buildings and communities. Members adhere to a code of ethics and professional conduct that assures the client, the public, and colleagues of an AIA