California Code, Streets and Highways Code - SHC § 36631

The collection of the assessments levied pursuant to this part shall be made at the time and in the manner set forth by the city council in the resolution levying the assessment. Assessments levied on real property may be collected at the same time and in the same manner as for the ad valorem property tax, and may provide for the same lien priority and penalties for delinquent payment. All delinquent payments for assessments levied pursuant to this part may be charged interest and penalties.