Cal. Rev. & Tax. Code § 2958
The sale shall be at public auction. A sufficient amount of the property shall be sold to pay the taxes, penalties, and costs.
(c) A fee of not exceeding fifteen dollars ($15) for each seizure which may be charged by the tax collector making the seizure.
Whenever any of the foregoing costs have been incurred by the county any payment of taxes made thereafter shall include the amount of such costs.
Costs include but are not limited to: