CAMBA’s Supportive Housing for Adults with a Substance Use Disorder (Primary Barrier) started in 2008. It provides 65 units of supportive housing to chronically homeless single adults (age 18 and over) who have a substance use disorder that is a primary barrier to independent living and who also have a disabling clinical condition (i.e., a medical or mental health condition, excluding serious and persistent mental illness (SPMI), that further impairs their ability to live independently).