How to Report Unclaimed Property   Locating Property Owners The Office of the Chief Financial Officer's Office of Finance and Treasury encourages holders of abandoned and unclaimed property to make reasonable efforts to locate its owners as soon as possible. Unclaimed property holders must send a notice to owners by first class mail no less than 60 days and no more than 120 days prior to reporting the property to the District. Expenses for your search efforts may not be deducted from your remittance. It is important that you maintain records of owners' last-known addresses and Social Security number and include this information in your report to us. This information greatly assists the Unclaimed Property Unit in verifying ownership of the claimants' property. Once the property has been reported, there is no time limit by which the owners must file a claim for its return. For unclaimed property already sent to us, the holder has the option of paying the claimant directly and then filing for reimbursement from the Unclaimed Property Unit.