Cal. Health & Safety Code § 18089

In the event application is made in this state for registration of a manufactured home, mobilehome, commercial coach, truck camper, or floating home and the department is not satisfied as to the ownership of the manufactured home, mobilehome, commercial coach, truck camper, or floating home or the existence of foreign liens thereon, then the department may register the manufactured home, mobilehome, commercial coach, truck camper, or floating home and issue a registration card with distinctive markings, but shall withhold issuance of a California certificate of title, unless the applicant presents documents sufficient to reasonably satisfy the department of the applicant’s ownership of the manufactured home, mobilehome, commercial coach, truck camper, or floating home and the absence of any liens thereon or posts a bond pursuant to subdivision (a) of Section 18086.5.