This attachment should be given to the Buyer prior to the submission of any offer and is not part of the Residential Resale Real Estate Purchase. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price.Do you want to create an Arizona real estate purchase agreement? Download the real estate purchase agreement template for free here at CocoSign. The Arizona Real Estate Purchase Agreement is a crucial document that outlines the terms and conditions involved in buying or selling property in Arizona. A purchase agreement is a form used for making an offer on a home. It contains a set of conditions and contingencies that are presented to the seller of a home. Step 1 – Fill Out the Buyer and Seller Information. 1. Seller.