Agreement and Signature​​ By signing below, I acknowledge that I am an authorized representative of the Customer. Any person or firm acting as an agent for the owner of property in Orange County must have a letter of authorization from the owner.(Print this document, complete it, and have your designated representative bring the document to the Registrar of Voters' office). This article will explain the authorization letter format and also give you authorization letter samples for your reference. Intheblanks form authorizing an individual filing agent to efile documents on behalf of a single attorney. A Letter of Authorization authorizes payment for medical services received over 12 months before the current month. A Property Owner's Letter of Authorization is a document granting permission for specified actions on a property. This free template can assist you. Authorization for Release of Information (103.4 KB). HIPAA Authorization (108.9 KB).