An Arizona purchase agreement facilitates the sale of real estate for an agreedupon price between the buyer and seller. 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.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. Download our free blank purchase agreement template in Word or PDF format: sample real estate purchase agreement template. Use this free customizable owner financing contract template to confirm financing between the owner selling a home and a buyer purchasing it.