Cal. Bus. & Prof. Code § 19260.2
The bureau and its authorized employees, representatives, and inspectors shall at all times have access to all lands, buildings, and equipment of household movers used in connection with the operation of their businesses as household movers in this state, and also all accounts, records, and memoranda, including all documents, books, papers, and correspondence kept or required to be kept by household movers, and may photocopy or electrostatically or photostatically reproduce at the bureau's expense any of these accounts, records, memoranda, documents, books, papers, and correspondence at either the premises of the household mover or the offices of the bureau. A household mover may determine whether the copying or reproduction is done at its premises or at the offices of the bureau, and if copying or reproduction expenses are incurred by the household mover, the bureau shall, upon request, reimburse the household mover for the expenses.
Ca. Bus. and Prof'l. Code § 19260.2