Iowa Code § 73A.2: Notice of hearing.

Before any municipality shall enter into any contract for any public improvement to cost in excess of the competitive bid threshold in section 26.3, or as established in section 314.1B, the governing body proposing to make the contract shall adopt proposed plans and specifications and proposed form of contract, fix a time and place for hearing at the municipality affected or other nearby convenient place, and give notice by publication in at least one newspaper of general circulation in the municipality at least ten days before the hearing.