Apply for a title within 15 days of purchase and take the application to an MVD Office or Authorized Third Party provider to complete the process. The following is required to obtain an Arizona title, registration and license plate for a vehicle previously titled or registered in another state.An Arizona Certificate of Title for a vehicle, when properly assigned and endorsed, is your proof of ownership document. To transfer a vehicle with a power of attorney document, you need to draw up that document first. You can renew your registration, learn more about registration stickers, and discover helpful resources about buying and selling your vehicle. Yes, you can probably do this. Yes, you would need to take the form to the SOS with you. First, in order to sign as POA you would need a valid Power of Attorney Form for Personal and Financial purposes. The buyer and seller should meet at a notary, tag service, or motor vehicle dealer to ensure the title application is completed correctly. We need to fill out the Application for Certificate of Title State Form 44049.