N.D. Cent. Code § 21-03-28
All bids must be accompanied by a certified check, cashier's check, surety bond, or bank draft, in the amount of not less than one percent of the bid. After all bids have been received, they must be delivered forthwith to the governing body of the municipality, which shall award the sale of such bonds to the bidder who agrees to purchase them upon the terms most favorable to the municipality, unless the governing body determines to reject all bids. The governing body has the right to reject any and all bids. If no bids are received or if all bids received are rejected, the governing body may, without readvertising the bonds for sale, negotiate the sale of all of the bonds to any person upon terms complying with those specified in the notice of sale theretofore published, and if bids were rejected, more favorable to the municipality than those specified in a rejected bid. No sale may be for less than ninety-eight percent of the par value of such bonds plus the interest accrued on the bonds to the date of the delivery thereof.
N.D.C.C. § 21-03-28