The Southern California Sanitarium Historic District is significant under Criterion A at the local level of significance because the property is associated with a major medical facility that contributed to the historical development of the City of Pasadena, California. It represents an important period (1904-1929) in the history of the City, which was one of phenomenal economic and demographic growth. The primary associative historic context is the City of Pasadena : A Health, Tourist, and Social Mecca. Other contexts include: Early Anglo-American Settlement and Urbanization; Civic Enhancement and Planning in Pasadena ; and Art, Culture and Society in Pasadena .2 Buildings and the structure in the district exhibit characteristics of both Arts and Crafts and Period Revival styles and some were designed by prominent local architects of those periods.
The significance of the Southern California Sanitarium Historic District is derived from and reflects influences of climate and geography. Those influences brought to the region first Spaniards and later, other Europeans, Africans and Asians, and American Easterners and Midwesterners seeking their health and fortune . During its period of significance ( 1904-1929), the sanitarium was a premiere facility for the treatment of mental disorders. The facility emphasized a healthy physical and social environment for its patients. It played a significant role in the field of health care in the community as well as in the greater Los Angeles region.