Utilize our Landlord Proof of Residency Letter template to confirm your current address and other relevant details to the landlord. The forms below may also be used. Acknowledgments.Once you have the change of address form filled out, you will need to take it to a post office in Arizona and deliver it to a postal worker behind the counter. The Homeless Verification Letter (HVL) shows proof and documentation of the length of time that a person has been experiencing homelessness. If this is your first time registering to vote in Arizona, you need to prove your US Citizenship and Residency in order to vote in State and local elections. Print clearly using black ink only.