California Code, Elections Code - ELEC § 9103

(a) Before circulating any initiative petition in a county, or any petition relating to the annexation of territory by a county, the consolidation of counties, or the dissolution of a county, its proponents shall file with the county elections official a notice of intention to do so.  The notice shall include the names and business or residence addresses of at least one but not more than five proponents of the petition, and shall be accompanied by the written text of the initiative and a request that a ballot title and summary be prepared.

(b) Any person filing a notice of intent with the county elections official shall pay a fee to be established by the board of supervisors not to exceed two hundred dollars ($200) to be refunded to the filer if, within one year of the date of filing the notice of intent, the county elections official certifies the sufficiency of the petition.