A commercial real estate manager is in charge of the property management for a commercial building. In this position, you oversee the daily operations of the building and act as a real estate broker to buy, sell, and lease units. Your main job duties include managing the maintenance team, collecting rent from tenants, resolving tenant issues, advertising available units, and negotiating new lease contracts. Some commercial real estate managers oversee the payment of insurance, taxes, and other bills related to the property.