Cal. Gov. Code § 50552

The legislative body shall adopt a resolution of intention, describing the improvements and stating the reason for which the improvement is proposed to be sold. The resolution shall contain a notice of the time and place, when and where persons objecting to the proposed sale may appear before the legislative body and show cause why the proposed sale shall not be made. The time shall not be less than 15, nor more than 40, days after the passage of the resolution.