SAMHSA’s Projects for Assistance in Transition from Homelessness (PATH) program was created to reduce or eliminate homelessness and imminent risk of homelessness for individuals with serious mental illness or co-occurring mental and substance use disorders. The 2020 Triennial Process Evaluation Report of the Projects for Assistance in Transition from Homelessness Program (PATH) looks at the PATH program data from 2016, 2017, and 2018 to ensure that the services provided were appropriate and well-administered by the grantees. PATH is administered by the Division of State and Community Systems Development of the Center for Mental Health Services (CMHS) and the evaluation was conducted by the Center for Behavioral Health Services and Quality’s Office of Evaluation.