Cal. Health and Safety Code § 18114

(a) A registration fee of twenty-three dollars ($23) shall be due and payable to the department at the time of original registration or renewal of registration for each transportable section of a manufactured home, mobilehome, or commercial coach that is subject to annual renewal. (b) For a manufactured home, mobilehome, or truck camper that is not subject to annual renewal, the registration fee of twenty-three dollars ($23) shall be due for each transportable section at the time of original registration and upon application for each subsequent change, addition, or deletion of registered owners, legal owners, or junior lienholders and shall be in addition to any other fees that may be required by the application. (c) A registration fee of forty-two dollars ($42) shall be charged for each original application for registration of a floating home and for each subsequent application to record a change, addition, or deletion of registered owners, legal owners, or junior lienholders of a floating home. This fee shall be in addition to any other fees that may be required by the application. (d) A registration fee is delinquent if not paid in accordance with the following: (1) On or before the expiration date of the previous registration year for all annual renewals. (2) Ten days after the date the transaction is complete, as defined in subdivision (e) of Section 18080.5, for all transactions by or through a dealer whenever a manufactured home, mobilehome, or commercial coach is sold, rented, leased, leased with an option to buy, or otherwise transferred, except that for registration fees due because of annual renewal, the fee is delinquent after the expiration date of the previous registration year. (3) Except for dealer transactions, 20 days after the registration fee became due for original registration required by subdivision (a), and for registration fees required by subdivisions (b) and (c). (e) A penalty of three dollars ($3) shall be added for each registration fee that is delinquent. No penalty is due if the application and required registration fees were placed in the United States mail before midnight on the day before the fee became delinquent, as evidenced by postmark or affidavit by the applicant.