THIS PURCHASE AGREEMENT ("Agreement") is made as of the Effective Date of this. 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.All blank spaces in the forms shall be filled in completely. If some spaces do not apply, so state. You have a current "Child Support Order" that was entered in Pima County,. ✓ You wish to modify the Order,. This Real Estate Sale and Purchase Agreement and Escrow Instructions (the. AGREEMENT, according to the terms and conditions, contained therein: Purpose. Dated. Development and Purchase Agreement.