Address Validator for Checkout Ship To Home Adresss

I want to customers to submit Verified Addresses in Checkout. Currently user just enters manually into fields. I'd like switch to verified emails. The way I want to do this is the way its done on this website: [login to view URL] Here's a screenshot of their 1 line address field that verifies address of user when being entered. [login to view URL] User types address in 1 field , it validates against USA database, and then populates rest of fields below. I want to add that 1 row above Street Address field in my checkout, so user doesn't need to move fields to type address, just types it in all in 1, and then once they choose the verified address that comes in dropdown, it then auto populates the below fields. [login to view URL] The website is [login to view URL] Add 1 fish to cart, and press checkout. Add your Name, Email, and Phone Number (USE USA format) choose SHIP TO HOME, then click checkbox for terms, and click next.. next page, choose I agree. then next page is Address fields we working on today.