People experiencing homeless and substance use issues were eligible to enroll in a two-stage treatment program. During the first stage, participants were in day-treatment programming for 5.5 hours each weekday and resided in shelters or other temporary housing that participants secured through referrals to other agencies. Programming included group and individual therapy and coaching focused on helping participants address their substance use issues.

In the first two-month phase, intervention group participants were housed in Project H&ART residences and received group and individual therapy (one or two sessions per week), art therapy, psychodrama, group education classes, and weekly recreational events. Intervention participants were also required to attend AA or NA meetings daily. In the second two-month phase, intervention group participants primarily received case management designed to encourage them to search for employment and develop soft skills.