Legal Question in Civil Litigation in California

You need to read the California Rules of Court sections on Ex Parte hearings. If you are going to represent yourself, you need to do your own homework. This is a site for free answers to basic legal questions, not a place to get full Limited Scope Representation help for nothing, when everyone else pays for those services.

Ex parte papers generally are not served before the hearing, but there are exceptions.

But your question is ambiguous. If you are asking about service of some other materials, I would need to know more about your situation.

An ex parte appearance involves an application, a memorandum of points and authorities, and a declaration. The declaration must show that you gave proper ex parte notice in accordance with the rules of court. The rules of court also require you to serve the papers that you are filing as soon as possible on the other party.