Family involvement in routines that exacerbate and maintain child anxiety is referred to as family accommodation. Family involvement is also related to maintenance of severe problem behavior (SPB) demonstrated by children with intellectual and developmental disabilities (IDD). Family members may deliver attention, tangible items, or remove aversive task demands that produce temporary cessation, or avoidance of SPB, but long-term maintenance. This Clinical Perspectives article describes parallels between the treatment of family accommodation in child anxiety and the assessment and treatment process for SPB. Suggestions are described for borrowing the concept of family accommodation to help caregivers of children who demonstrate SPB begin to approach previously avoided contexts. A case vignette is provided to illustrate strategies for targeting family accommodation as an expansion of function-based treatments for SPB.