Home Unclaimed Property Claim Your Property Claim Your Property! Submit your claim in four easy steps: Complete the information requested on the claim form found here: COT ST912 claim form (PDF). Follow specific instructions for individuals, businesses/organizations, deceased/estates, on behalf of another person, or joint accounts/multiple owners included on the claim form. Sign the form & attach the supporting documentation listed. Mail or email to the address located on the top of your claim form. or file a digital claim at OneStop Public Profile Page Do you still have questions? Contact Us: In Maryland: 410-767-1700 Toll Free: 800-782-7383 unclaim@marylandtaxes.gov