real property rights can be assigned just as any other contractual right. however, special duties and liabilities attach to transfers of the right to possess property. with an assignment, the assignor transfers the complete remainder of the interest to the assignee. the assignor must not retain any sort of reversionary interest in the right to possess. the assignee's interest must abut the interest of the next person to have the right to possession. if any time or interest is reserved by a tenant assignor then the act is not an assignment, but is instead a sublease.