N.D. Cent. Code § 28-24-10

If any taxes, assessments, insurance premiums, utility charges, or other items are paid by the purchaser or by a redemptioner, or if the purchaser or redemptioner has or acquired any lien other than that on which the sale or redemption was made, written notice of that item must be given to the sheriff and if that notice is not given to the sheriff, the property may be redeemed without paying the amount shown in the notice of additional lien.