We offer an informal complaint resolution service to Washington state residents, and to consumers with complaints about businesses located in Washington state. Below you will find information on how to file your complaint in U.S. District. Court.VERIFIED COMPLAINT FOR POSSESSION OF REAL PROPERTY -- FORM 1B. (Violation of Obligations of Tenancy or Other Grounds for Eviction – Residential Property). To file a complaint against a health care provider or facility, an individual can fill out the HSQA complaint form available online. To file a new case, you must first complete a document called a "Complaint. " A complaint is a legal document that describes why you believe the defendant(s). When you give documents to a Washington state court, it is important to format the documents correctly. This document outlines the rules you must follow. Field 1: Fill in the county in which the action is brought.