*67.463.  Public hearing, procedure — apportionment of costs — special assessments, notice — payment and collection of assessments. — 1.  At the hearing to consider the proposed improvements and assessments, the governing body shall hear and pass upon all objections to the proposed improvements and proposed assessments, if any, and may amend the proposed improvements, and the plans and specifications therefor, or assessments as to any property, and thereupon by ordinance or resolution the governing body of the city or county shall order that the improvement be made and direct that financing for the cost thereof be obtained as provided in sections 67.453 to 67.475.

  2.  After construction of the improvement has been completed in accordance with the plans and specifications therefor, the governing body shall compute the final costs of the improvement and apportion the costs among the property benefitted by such improvement in such equitable manner as the governing body shall determine, charging each parcel of property with its proportionate share of the costs, and by resolution or ordinance, assess the final cost of the improvement or the amount of general obligation bonds issued or to be issued therefor as special assessments against the property described in the assessment roll.

  3.  After the passage or adoption of the ordinance or resolution assessing the special assessments, the city clerk or county clerk shall mail a notice to each property owner within the district which sets forth a description of each parcel of real property to be assessed which is owned by such owner, the special assessment assigned to such property, and a statement that the property owner may pay such assessment in full, together with interest accrued thereon from the effective date of such ordinance or resolution, on or before a specified date determined by the effective date of the ordinance or resolution, or may pay such assessment in annual installments as provided in subsection 4 of this section.

  4.  The special assessments shall be assessed upon the property included therein concurrent with general property taxes, and shall be payable in substantially equal annual installments for a duration stated in the ballot measure prescribed in subsection 2 of section 67.457 or in the petition prescribed in subsection 3 of section 67.457, and, if authorized, an assessment in each year thereafter levied and collected in the same manner with the proceeds thereof used solely for maintenance of the improvement, taking into account such assessments and interest thereon, as the governing body determines.  The first installment shall be payable after the first collection of general property taxes following the adoption of the assessment ordinance or resolution unless such ordinance or resolution was adopted and certified too late to permit its collection at such time.  All assessments shall bear interest at such rate as the governing body determines, not to exceed the rate permitted for bonds by section 108.170.  Interest on the assessment between the effective date of the ordinance or resolution assessing the assessment and the date the first installment is payable shall be added to the first installment.  The interest for one year on all unpaid installments shall be added to each subsequent installment until paid.  In the case of a special assessment by a city, all of the installments, together with the interest accrued or to accrue thereon, may be certified by the city clerk to the county clerk in one instrument at the same time.  Such certification shall be good for all of the installments, and the interest thereon payable as special assessments.

  5.  Special assessments shall be collected and paid over to the city treasurer or county treasurer in the same manner as taxes of the city or county are collected and paid.  In any county with a charter form of government and with more than six hundred thousand but fewer than seven hundred thousand inhabitants and any county of the first classification with more than one hundred thirty-five thousand four hundred but fewer than one hundred thirty-five thousand five hundred inhabitants, the county collector may collect a fee as prescribed by section 52.260 for collection of assessments under this section.