Official Twitter of Fidelity House Arlington. Youth Center serving the needs of the community since 1955 Fidelity House is a community center offering activities and care for all ages especially youth. Serving the needs of Arlington and surrounding communities for the past 67 years! Fidelity House is dedicated to meeting the needs of the community by providing flexible, diverse and quality programs for all ages. Youth development is the primary purpose of the center. Our mission is the promotion of good citizenship, increasing self-reliance and furthering the social, physical and emotional growth of the individual.