Address: 1880 JFK blvd Philadelphia PA 19103 Phone: 215-800-0373 Website: www.onyxmgt.com/ Category: Property Management Hours: Mon-Fri 9am-6pm , Sat 10am - 2pm Payment: All cc, cash. Description: Onyx Management Group has over two decades of experience in all phases of commercial real estate management as well as leasing and sales. We manage office parks, retail shopping centers, medical facilities, industrial properties, bowling facilities, and self-storage facilities. Onyx Management Group is well known for its effectiveness in dealing with difficult problems. Using practical management knowledge, experience with government agencies, sound financial analysis, careful tenant selection methods and intense supervision, Onyx Management Group is able to put in place a management program to meet the needs of its clients, the owners. Onyx Management Group provides a full range of property management services with competitive