What must all contractors maintain to operate legally in California?

To operate legally in California, all contractors are required to maintain a valid contractor's license. This licensing is overseen by the Contractors State License Board (CSLB), which ensures that contractors have met specific requirements, including passing examinations and adhering to regulations that ensure consumer protection. The license not only validates a contractor's qualifications but also provides them with the legal ability to bid on and undertake construction projects within the state.

While having a business insurance policy or a registered business name may be advisable for contractors, and a contractor training certificate can be beneficial, they are not mandatory for all contractors under California law. The requirement for a valid contractor's license is what distinguishes licensed contractors from unlicensed activity, which is crucial for compliance and legal operation within the construction industry.