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. An Arizona purchase agreement facilitates the sale of real estate for an agreedupon price between the buyer and seller.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. How do I fill this out? Download a free Arizona residential purchase agreement template outlining terms for buying and selling property. A For Sale By Owner contract Arizona must include: 1. The Purchase Price, 2. Get a comprehensive understanding of Arizona real estate purchase and sale agreements with our indepth overview and free template. The Arizona Real Estate Purchase Agreement form stands as a legally binding document between a seller and a buyer, explicitly detailing the terms.