Sec. 12.2 Sidewalks.

   The council shall prescribe that sidewalks[,] except crosswalks, shall be built by the owner of platted land within the city in the public streets adjacent to and abutting upon such lots and premises in the manner and within the time to be prescribed by ordinances; provided that, in case of the failure of any such owner to comply with the provisions of such ordinance[,] the city may build or cause to be built such sidewalks and assess the cost thereof against such owner and against the land improved thereby, in a manner prescribed by the council by ordinance.

Sec. 12.3 Boulevard lighting.

   The council shall have power to assess the cost of installing a boulevard lighting system on any street upon the lands abutting thereupon provided the property owners of a majority of the frontage on such street or part thereof to be so improved shall petition therefor.

Sec. 12.4 General power relative to special assessment.

   The council shall have the power to determine the necessity of any local or public improvement with or without a petition therefor and to determine that the whole or any part of the expense thereof shall be defrayed by special assessment upon the property especially benefited, provided that all special assessments levied shall be in proportion to the benefits derived from the improvement.

Sec. 12.5 Procedure to be fixed by ordinance.

   The council shall prescribe by ordinance the complete special assessment procedure concerning the initiation of projects, plans and specifications, estimates of costs, notice of hearings, making and confirming assessment rolls, and the correction of errors therein, collection of special assessments, and any other matters concerning the making of improvements by the special assessments method, subject to the provisions of this chapter.

Sec. 12.6 Objection to improvement.

   If, at or prior to final confirmation of any special assessment, more than fifty per cent of the number of owners of privately owned real property to be assessed for any improvement, or in case of paving or similar improvements more than fifty per cent of the number of owners of frontage to be assessed for any such improvement, shall object in writing to the proposed improvement, the improvement shall not be made by proceedings authorized by this charter without a five-seventh vote of the members of the council, provided that this section shall not apply to sidewalk construction.