Cal. Business and Professions Code - BPC § 19267. Section 19267.
The bureau shall establish rules and regulations controlling the estimates given by a household mover to a shipper of the charges the household mover would make to perform services covered by this chapter. All household movers
shall observe those rules and regulations and the failure to do so is unlawful. The bureau shall make such rules and regulations as are necessary to the application and enforcement of rules and regulations established pursuant to this section.