Whenever an assessment, deficit assessment, or reassessment for any improvement, which has been or may be made by the city, has been or shall be hereafter set aside, annulled, declared or rendered void, or its enforcement refuted by any state or federal court having jurisdiction thereof, whether directly or by virtue of any decision of such court, or when the council shall be in doubt as to the validity of such assessment, deficit assessment, or reassessment or any part thereof, the council may make a new assessment or reassessment. Such reassessment shall be made in the manner provided by ORS 223.405 to 223.485. (Prior code § 2.034)