Developmental considerations provide great implications for counselors. Development follows a path that is continuously impacted by systemic, relational, and multicultural influences. These influences impact how children make sense out of and act in response to critical life circumstances. Incorporating a developmental perspective when counseling children and adolescents and aiding them in successfully mastering tasks at various developmental milestones continues to be a core and essential component of counseling. Children’s level of development effects how they respond to creative and time-efficient counseling strategies, interventions, and modalities. This chapter identifies the relationship between social, emotional, and mental health maturation with child and adolescent development. It demonstrates a comprehensive understanding of how developmental theory frameworks inform crafting and integrating client-centered counseling interventions, strategies, and best practice methods. The chapter develops an awareness of counseling implications when working with children with diverse developmental histories.