Cal. Pub. Cont. Code § 20460

Each person whose claim has not been paid by the contractor or his subcontractors, shall have a first lien upon and against the assessment, any partial assessment, any reassessment and any bonds which may be issued to represent any assessment or reassessment, which lien may be enforced by action brought within three months after the date of the filing of the verified statement in the superior court of the county in which such work is done.