This study reports child and family outcomes from a community-based, quasi-experimental pilot trial of "Project ImPACT for Toddlers" ("PI[superscript T]"). "PI[superscript T]" is a parent-mediated, naturalistic, developmental behavioral intervention for children with or at-risk for autism spectrum disorder developed through a research community partnership. Community early interventionists delivered either "PI[superscript T]" (n=10) or Usual Care (UC; n=9) to families based on Part C assigned provider. Twenty-five families participated, with children averaging 22.76 months old (SD=5.06). Family and child measures were collected at intake, after three months of service and after a three-month follow-up. Results indicate significantly greater improvements in positive parent-child interactions for "PI[superscript T]" than UC families, as well as large, but non-significant, effect sizes for "PI[superscript T]" families in children's social and communication skills. [This is the online version of an article published in "Autism."]