California Code, Streets and Highways Code - SHC § 8804

If there are no available funds in the treasury with which to make payment of the amount of the delinquent assessment and interest for which the property was declared to be in default, the tax collector shall make demand upon the legislative body that a suitable amount be included in the next tax levy for the purpose of providing funds with which to make the payment.  However, the period of redemption from the declaration of default shall not be extended thereby nor shall the rights or privileges of the property owner be affected.

This section applies only to bonds representing unpaid assessments, which assessments were confirmed before June 6, 1978.