There is limited research regarding the effectiveness of community-based services for young adults with autism spectrum disorder (ASD) as they transition out of school and enter a more autonomous life stage. This study utilized a two-phase, mixed methods design to determine the feasibility and participant acceptability of a protocol developed to standardize an assessment of program effectiveness for young adults with ASD at a community-based center. Field notes, participant interviews, and clinical observations were combined with descriptive analysis of participant survey responses. This study offers insights into the process of effective outcomes measurement for young adults with ASD participating in community-based programs. Administration of the study's protocol is feasible; however, alternative methods of data collection should continue to be explored. Furthermore, research in the form of a pilot study is needed to further determine the protocol's facility for assessing program outcomes in young adults with ASD.