(Print on district letterhead and keep on file at district office.) DATE. Note: You must have your Letter of Authorization notarized using the Certificate of Acknowledgement attached.This form is required whenever a property owner grants authority to another individual to sign on their behalf when obtaining a permit. Clearly state the position you are applying for and where you found the job listing. Sample Letter of Authorization. This letter also contains the period of effectivity of the contract of agency between the principal and the agent. Template for fast complaint letter (PDF, 105 KB). 1 The italicized text in parenthesis throughout this sample document are placeholders that must be filled in. Some authorization letters need to be notarized so they have legal weight and standing in a court of law when dispute issues break out. How do you write a letter to authorize on behalf of someone?