Disposition of Unclaimed Property 

  Iowa Code § 556.2C.2. states, "An agreement to pay compensation to recover or assist in the recovery of an outstanding warrant made within twenty-four months after the date the warrant is canceled is unenforceable. However, an agreement made after twenty-four months from the date the warrant is canceled is valid if the fee or compensation agreed upon is not more than fifteen percent of the recoverable property, the agreement is in writing and signed by the payee, and the writing discloses the nature and value of the property and the name and address of the person in possession. This subsection does not apply to a payee who has a bona fide fee contract with a practicing attorney regulated under chapter 602, article 10." 

State of Iowa Outdated Warrants

Outdated Warrant information is available for five fiscal years.
See Iowa Code § 25.2. for more details.