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, renting out Residential properties can be an excellent investment. Just remember you don't want to rent a place from someone while isn't licensed correctly.