N.D. Cent. Code § 40-11-04
Every municipality shall enact an ordinance providing for the conveyance, sale, lease, or disposal of personal and real property of the municipality. When the property to be disposed of is estimated by the governing body of the municipality to be of a value of less than two thousand five hundred dollars, the property may be sold at private sale upon the proper resolution of the governing body. In all other cases, the property may be sold only at public sale or as provided under section 40-11-04.2. This section and sections 40-11-04.1 and 40-11-04.2 do not apply to a lease by a municipality to the state, or any agency or institution of the state, of any waterworks, mains, and water distribution system and any equipment or appliances connected therewith and any real property related thereto pursuant to subsection 5 of section 40-33-01 or of any sewage system and all related property for the collection, treatment, purification, and disposal in a sanitary manner of sewage pursuant to section 40-34-19.
N.D.C.C. § 40-11-04