California Code, Health and Safety Code - HSC § 18080.1

(a) In the case of an individual owner, the manufactured home, mobilehome, commercial coach, truck camper, or floating home shall be registered in the true name of the individual owner only. Complimentary or professional titles may be added to the true name only if the individual is commonly addressed by that title.

(b) In the case of a guardianship or conservatorship, the manufactured home, mobilehome, commercial coach, truck camper, or floating home shall be registered in the name of the person or persons designated as the conservators or guardians, as evidenced by documentation of that status deemed adequate by the department. The name shall be followed by the word “guardian” or “conservator,” whichever is appropriate. Transfer of ownership or encumbrance of a manufactured home, mobilehome, commercial coach, truck camper, or floating home so registered shall require the signatures of all designated conservators or guardians.

(c) In the case of a trust, the manufactured home, mobilehome, commercial coach, truck camper, or floating home shall be registered in the name of the trust as evidenced by documentation of that status deemed adequate by the department. Transfer of ownership or encumbrance of a manufactured home, mobilehome, commercial coach, truck camper, or floating home so registered shall require the signature or signatures of the authorized trustee or trustees designated in the trust.

(d) In the case of a manufactured home, mobilehome, commercial coach, truck camper, or floating home registered in the name of a company, the application for registration shall be countersigned by an officer or authorized agent of the company. Transfer of ownership or encumbrance of a manufactured home, mobilehome, commercial coach, truck camper, or floating home so registered shall require the signature of an officer or authorized agent of the company.

(e) In the case of a manufactured home, mobilehome, commercial coach, truck camper, or floating home registered to an estate, the application for registration shall be signed by the appointed executor or administrator of the estate as evidenced by documentation of that status deemed adequate by the department. Transfer of ownership or encumbrance of a manufactured home, mobilehome, commercial coach, truck camper, or floating home so registered shall require the signature of the appointed executor or administrator.