Although support efforts are being made on the institutional level for students with learning disabilities it is observed that children with autism spectrum disorder (ASD) and other developmental disabilities may benefit from home-based interventions to promote positive, prosocial behavior. In such type of support therapy the practitioner frequently (e.g., behavior analyst) provides training and support to parents to achieve the desired behavior change. When children are provided with such facilities and the changes start to occur, progress-monitoring data pertaining to both treatment fidelity and child outcomes are important in deciding if supports delivered are effective. Unfortunately little is known about treatment fidelity assessment in this setting. Therefore to fill this research gap, 314  behavior analysts working across the United States in homes were surveyed. The obtained information indicates that nearly all participants reported having received some or extensive training on the importance of treatment fidelity. Most respondents also indicated that treatment fidelity is assessed in at least 30% of sessions in homes when working with parents, primarily by means of direct observation versus indirect methods. Future consultation research and the practice are required.