N.D. Cent. Code § 61-24.8-31
The district treasurer shall notify the county auditor not later than August twentieth in each year of any special assessments that were made in the improvement district in addition to those reported in the previous year. The county auditor shall make and deliver to the district treasurer on or before September twentieth each year a copy of the real estate assessment book or other forms for the current year covering all additions in which any special assessments have existed and where any will appear for the current year as advised by the district treasurer. The district treasurer shall insert in the proper columns under the appropriate headings the amount of each of the installments of the assessments on the lots or subdivisions of lots or tracts of land which are to be extended upon the tax lists of the improvement district for the current year. The district treasurer shall show the total amount of special assessments certified to the county auditor for the current year. If a division of property has been made since the original assessment, the district treasurer shall make or cause to be made the proper division of the special assessments on the lots or tracts of land in the same manner as general taxes are divided and assessed as furnished by the county auditor. The district treasurer shall certify the special assessments to the county auditor by November first of each year.
N.D.C.C. § 61-24.8-31