One of the most common reasons people with intellectual and developmental disabilities (IDD) return to institutions is because of maladaptive behaviors. This study's aim was to examine the impact organizational supports can have on the community outcomes of people with dual diagnosis--those with IDD and psychiatric disabilities. We analyzed secondary Personal Outcome Measures interview data from 533 people with dual diagnosis. Findings revealed people with dual diagnosis were significantly more likely to have community outcomes present when they received individualized organizational supports. In addition, we found a number of disparities in organizational supports, including related to guardianship, communication method, and residence type. A more robust service system is necessary to ensure people with dual diagnosis are integrated into their communities.