Group homes for adults with developmental disabilities. BARC purchased two houses that serve as group homes for adults with developmental disabilities. The single-family homes, which are located in Sellersville, Pa., and Hilltown, Pa., are home to as many as 11 adults who receive support and services from BARC. Based in Holicong, Pa., BARC is a non-profit organization that provides services for 900 adults and children with developmental disabilities in Bucks County.