California Code, Government Code - GOV § 6157

(a) The state, and each city, whether general law or chartered, county, and district, each subdivision, department, board, commission, body, or agency of the foregoing, shall accept personal checks, in addition to any other authorized form of payment, drawn in its favor or in favor of a designated official thereof, in payment for any license, permit, or fee, or in payment of any obligation owing to the public agency or trust deposit, if the person issuing the check furnishes to the person authorized to receive payment satisfactory proof of residence in this state and if the personal check is drawn on a banking institution located in this state.

(b) If any personal check, corporate check, cashier's check, money order, or other draft method offered in payment pursuant to this section is returned without payment, for any reason, a reasonable charge for the returned check, not to exceed the actual costs incurred by the public agency, may be imposed to recover the public agency's processing and collection costs.  This charge may be added to, and become part of, any underlying obligation other than an obligation which constitutes a lien on real property, and a different method of payment for that payment and future payments by this person may be prescribed.

(c) The acceptance of a personal check, corporate check, cashier's check, money order, or other draft method pursuant to this section constitutes payment of the obligation owed to the payee public agency to the extent of the amount of the check as of the date of acceptance when, but not before, the check is duly paid.

(d) The provisions in subdivision (b) prohibiting a returned check charge being added to, and becoming a part of, an obligation which constitutes a lien on real property do not apply to obligations under the Veterans' Farm and Home Purchase Act of 1974 (Article 3.1 (commencing with Section 987.50) of Chapter 6 of Division 4 of the Military and Veterans Code).