House for sale in Greeley, CO , Real estate agents are professionals who specialize in real estate transactions. They are licensed by their state to sell homes and properties. In order to become a real estate agent, they have to pass a licensing exam that covers the laws and regulations regarding real estate. Once they have passed this test, they can work independently or represent a company. There are many different types of real estate agents, including residential sales agents, commercial agents, property managers, mortgage brokers, appraisers, and land developers. Most states require real estate agents to be registered with the local board of realtors. This means that they must pay annual fees and follow certain rules and regulations.