If at the time of the public hearing on the proposed local improvement the number of valid written remonstrances is from the owners of less than two-thirds of the property that will benefit specially from the improvement, or the improvement is a sidewalk or an improvement unanimously declared by the council to be needed immediately due to an emergency, the council may by motion authorize the improvement to be carried out in accordance with the resolution declaring the local improvement. This motion may be made at the time of the hearing or within 60 days after the hearing. Multiple owners of a single parcel have a total of one “vote” and may divide their single “vote” according to ownership percentage.