The history of AIA Inland California is closely intertwined with the growth of architecture throughout the Inland Empire and the leadership of pioneering architects such as Clare Henry Day, FAIA, and Clint Marr, FAIA. The organization traces its roots to 1957, when the AIA Inland District was first established to serve architects practicing in Riverside and San Bernardino Counties.

As Southern California experienced significant postwar growth, local architects recognized the need for a regional professional organization that could advocate for the profession, foster collaboration, and address the unique challenges and opportunities facing architects in the Inland Empire.

Over the following decade, the organization continued to grow alongside the region it served. In 1966, the chapter was formally incorporated by the State of California as a nonprofit corporation and renamed the American Institute of Architects, Inland California Chapter. As a nationally accredited component of the American Institute of Architects, the organization expanded its role in advancing architectural excellence, professional development, public advocacy, and community engagement throughout Inland California.