California Code, Corporations Code - CORP § 18120

(a) An unincorporated association may record in a county in which it has an interest in real property a verified and acknowledged statement of authority stating the name of the association, and the names, title, or capacity of its officers and other persons who are authorized on its behalf to acquire, transfer, or encumber real property.  For the purposes of this section, “statement of authority” includes a certified copy of a statement recorded in another county.

(b) An unincorporated association may revoke a statement of authority by recording either of the following documents in the county in which the statement of authority is recorded:

(c) It shall be conclusively presumed in favor of a bona fide transferor, or purchaser, or encumbrancer for value of real property of the association located in the county in which a statement of authority has been recorded pursuant to subdivision (a), that a person designated in the statement is authorized to acquire, transfer, or encumber real property on behalf of the association.

(d) The presumption provided in subdivision (c) does not apply if, before the acquisition, transfer, or encumbrance, either of the following occurs: