STEP 1: Learn About Your. Rights and Find Help.To complete an eviction we require the original writ, Sheriff's fee, and a signed Contra Costa County Sheriff letter of instruction for eviction located above. Below is the form used to file code enforcement complaints within the County's jurisdiction. Complete the appropriate information and click the SUBMIT button. This comprehensive guide aims to shed light on the key aspects of tenant rights in Contra Costa County, balancing the interests of property owners and tenants. How to fill out the Landlord's Complaint for Repossession? 1. Provide the property description. 2. To move out and leave a tenancy without being indebted to their former landlord. The pertinent government rental assistance program for rental assistance to cover the rental debt demanded in the complaint.