The Tax Office holds unclaimed property tax overpayments made within the last three years and outstanding (uncashed) refund checks. Questions regarding overpayment on taxes.To start payment under the schedule, submit the amount shown in the Minimum Payment Due section of the form. The District Clerk's Office accepts the following forms of Payment: 1. Cash Bring your cash payments to the Civil Courthouse. Account number (7 or 13 digits). Marilyn Burgess, Harris County District Clerk 201 Caroline, Suite 420 Houston, TX 77002