Please be advised that. This form is required whenever a property owner grants authority to another individual to sign on their behalf when obtaining a permit.A templated example of a Letter of Authorization (LOA) requesting authorization for inbound customer calls made to your business' Customer Support. : ID No. : Physical Address : Postal Address. COMPLETING THE PETITION FOR PROBATE, DE-111. Write your name and address in the top left box. Sample Letter of Authorization. Below are the most commonly used forms and bulletins. Click on the applicable folder where a preview of the document or download option are available. A letter of authorization from the property owner.