384.51  Adoption of resolution.
  The council shall meet as specified in the published notice, and after hearing all objections and endorsements from property owners and other persons having an interest in the matter, and after considering all filed, written objections, may adopt or amend and adopt the proposed resolution of necessity, or may defer action until a subsequent meeting. A resolution of necessity requires for passage the vote of three-fourths of all the members of the council, or, in cities having but three members of the council, the vote of two members, and where a remonstrance has been filed with the clerk, signed by the owners subject to seventy-five percent of the amount of the proposed assessments for the entire public improvement included in the resolution of necessity, a resolution of necessity requires a unanimous vote of the council.
  An amendment which extends the boundaries of a district, increases the amount to be assessed against a lot, or adds additional public improvements, is not effective until an amended plat, schedule, and estimate have been prepared and adopted, a notice published and mailed to all affected property owners, and hearing held in the same manner as the original proceedings, or until all affected property owners agree in writing to the change. The adoption of a resolution of necessity is a legislative determination that the improvement is expedient and proper and that property assessed will be specially benefited by the improvement and this determination of the council is conclusive. Ownership of property to be assessed by an improvement does not, except for fraud or bad faith, disqualify a council member from voting on any measure.
  After adopting the resolution of necessity, the clerk shall certify to the county treasurer of each county in which the assessed property is located, a copy of the resolution of necessity, the plat, and the schedule of assessments. In counties in which taxes are collected in two or more places, the resolution of necessity, the plat, and the schedule of assessments shall be certified to the office of county treasurer where the special assessments are collected. The county treasurer shall preserve the resolution, plat, and schedule as a part of the records of the office until the city certifies the final assessment schedule as provided in section 384.60 or certifies that the public improvement has been abandoned.
[C73, §466; C97, §793, 794, 810, 811, 965; S13, §792-b, 793, 965; SS15, §810, 840-m; C24, 27, §5996, 5999, 6915; C31, 35, §5996, 5999, 6610-c15, 6610-c16, 6915, 6915-c1; C39, §5996, 5999, 6610.26, 6610.28, 6915, 6915.1; C46, §391.23, 391.26, 417.15, 417.16, 420.267, 420.268; C50, §391.23, 391.26, 391A.11, 417.15, 417.16, 420.267, 420.268; C54, 58, 62, §391.23, 391.26, 391A.14, 417.15, 417.16, 420.267, 420.268; C66, 71, 73, §390A.12, 391.23, 391.26, 391A.14, 417.15, 417.16, 420.267, 420.268; C75, 77, 79, 81, §384.51; 
82 Acts, ch 1104, §15
]
86 Acts, ch 1241, §10
; 
89 Acts, ch 39, §11