California Code, Business and Professions Code - BPC § 7111

(a) Failure to make and keep records showing all contracts, documents, records, receipts, and disbursements by a licensee of all of his or her transactions as a contractor, and failure to have those records available for inspection by the registrar or his or her duly authorized representative for a period of not less than five years after completion of any construction project or operation to which the records refer, or refusal by a licensee to comply with a written request of the registrar to make the records available for inspection constitutes a cause for disciplinary action.

(b) Failure of a licensee, applicant, or registrant subject to the provisions of this chapter, who without lawful excuse, delays, obstructs, or refuses to comply with a written request of the registrar or designee for information or records, to provide that information or make available those records, when the information or records are required in the attempt to discharge any duty of the registrar, constitutes a cause for disciplinary action.