Cal. Corporations Code § 15911.18

Whenever a domestic or foreign limited partnership or other business entity having any real property in this state merges with another limited partnership or other business entity pursuant to the laws of this state or of the state or place in which any constituent limited partnership or constituent other business entity was organized, and the laws of the state or place of organization, including this state, of any disappearing limited partnership or disappearing other business entity provide substantially that the making and filing of the agreement of merger or certificate of merger vests in the surviving limited partnership or surviving other business entity all the real property of any disappearing limited partnership and disappearing other business entity, the filing for record in the office of the county recorder of any county in this state in which any of the real property of the disappearing limited partnership or disappearing other business entity is located of either of the following shall evidence record ownership in the surviving limited partnership or surviving other business entity of all interest of such disappearing limited partnership or disappearing other business entity in and to the real property located in that county: (a) A certificate of merger certified by the Secretary of State, or other certificate prescribed by the Secretary of State. (b) A copy of the agreement of merger or certificate of merger, certified by the Secretary of State or an authorized public official of the state or place pursuant to the laws of which the merger is effected.