Phone: (602) 771-7700. Create a document that outlines the agreement, including the type and amount of loan, the assets included in the mortgaged, and the terms of the agreement.Your mortgage documents will include a couple of key contracts you'll sign with your lender at closing that set the terms for your home loan. A real estate contract is a legally binding document between two or more parties participating in a purchase and sale, exchange, or transfer of real estate.