Real estate assignment contracts allow assignors to transfer rights under a purchase agreement to assignees. These contracts create opportunities for profit.Whether a buyer can assign a purchase agreement depends on the specific terms and conditions outlined in the original contract and applicable state laws. A basic sales and purchase contract will state the price you are buying the property for, it will list any conditions or terms you have agreed upon. Assignment clause samples. Assignment. Assignor assigns to Assignee all of Assignor's right, title, and interest in and to the Purchase Agreement, as amended. This page contains Assignments clauses in business contracts and legal agreements. We have organized these clauses into groups of similarly worded clauses. An assignment of purchase and sale agreement is a real estate transaction contract that defines the parties and terms of a real estate purchase. Used for real estate wholesaling to include an assignment clause.