Cal. Rev. & Tax. Code § 2242

Whenever the Legislative Counsel determines that a bill will require state reimbursement to a local agency or a school district as provided in Section 2229 or 2230, the Department of Finance shall prepare estimates of the amount of reimbursement which will be required. The estimates shall be prepared for the respective committees of each house of the Legislature which consider taxation measures and appropriation measures and shall be prepared prior to any hearing on such a bill by any such committee.