Similar to a number of western states, the state, cities and counties in Arizona play a significant role in licensing and regulating. Cities often take care of some of the most local issues like valet parking, while counties manage health permitting, particularly food businesses. Arizona itself oversees many industries, particularly professions and businesses that affect public safety.
In Arizona, engineering consultants give expert advice on a variety of design and construction issues. Even a consulting firm of one is a business. Many consultants operate out of their homes and make the mistake of assuming they can run their businesses license-free. However, most cities and states require business tax registration and licensing for all businesses, of all sizes – and some require Home Occupation Permits for home-based businesses.