Complete the form above called DEMAND FOR TRIAL DE NOVO. 1. Have an adult, not involved in the court case, mail a copy of the completed DEMAND.Make payment to the Clerk of the. Court. • Fill out a court form that explains your claim. The application form describes your claim to the. Court. Download, Fill In And Print Demand For Trial De Novo - Suffolk County, New York Pdf Online Here For Free. All papers to be filed in a court proceeding are to be mailed to the Suffolk County Clerk, Attn: Court Actions, 310 Center Drive, Riverhead, New York 11901. Q. Approximately 5 states use only commissioners; 23 states use commissioners with a trial de novo before a jury; and 18 states use only the jury. All papers to be filed in a court proceeding are to be mailed to the Suffolk County Clerk, Attn: Court Actions, 310 Center Drive, Riverhead, New York 11901. Q. To appear in court to ask the court for a change in the.