Cal. Sts. & High. Code § 22086

Before ordering any improvement specified in either the written proposal of the board or in the petition of property owners, the city council shall adopt a resolution of intention declaring its intention so to do, briefly describing the improvement, the streets which are to be improved, the general nature and the estimated costs and expenses thereof, the kinds of trees to be planted, if any, and fixing a time when the city council shall hear and pass upon protests against the improvement.