Ottosen DiNolfo Hasenbalg & Castaldo, Ltd. is dedicated to serving those who serve others: municipalities and other local governments, public pension boards, public safety organizations, and school districts. In addition, the firm represents individuals and business entities in a wide variety of legal matters. Founded in 1992, the firm has the breadth and scope of practice that allows us to develop comprehensive solutions for our clients. Nearly 400 government entities throughout Illinois rely on our attorneys to develop solutions that meet their specific legal needs.