An offer is just a contract with only buyer signature on it. When you fill out a contract form, it's just an offer from you to buy the home with the stated price and terms.How to properly fill out the Arizona Association of Realtors Resale Purchase Contract using Dotloop. An Arizona residential purchase agreement is a legal document outlining the terms and conditions for a buyer's purchase of residential property from a seller. The following is a checklist of helpful hints for consumers to help avoid some of the pitfalls of purchasing a new or used home, or raw, undeveloped land. Step 3 – Submit your purchase offer. Assuming you've already got the mortgage approval, your agent will submit your purchase offer to a listing agent or seller. Party Identification: A real estate purchase contract in Arizona defines the parties involved in the transaction. B) There are additional documents that are incorporated with the Purchase Contract, so please expect at least 2 hours to write an offer. You are legally bound to honor the agreement.