Seller agrees to complete, sign, and deliver to Escrow Company a certificate indicating whether Seller is a Foreign Person. FIRPTA requires that a foreign.Get a comprehensive understanding of Arizona real estate purchase and sale agreements with our indepth overview and free template. Download a free Arizona residential purchase agreement template outlining terms for buying and selling property. An Arizona purchase agreement facilitates the sale of real estate for an agreedupon price between the buyer and seller. This video covers the basics on how to write a Residential Purchase Contract for real estate in the state of Arizona. A For Sale By Owner contract Arizona must include: 1. The Purchase Price, 2. If the potential buyer likes the home, an offer in the form of a purchase agreement is written. A For Sale By Owner contract Arizona must include: 1.