By Definition, a Las Vegas real estate broker is "any person, copartnership, association or corporation who, for a compensation or valuable consideration, sells or offers for sale, buys or offers to buy, or negotiates the purchase, sale, or exchange of real estate, or who leases or offers to lease or rents or offers for rent any real estate or the improvements thereon for others. Such a broker must secure a state license. For a license to be issued to a firm, it is usually required that all active partners and officers must be licensed real estate brokers."
Simply put, a broker is licensed to help you buy, sell, or rent real estate. Often a broker may own a company but have agents and a staff to sell and coordinate transactions. Agents work on behalf of the broker and become the "face" of the brokerage.
Hiring the right Las Vegas broker to help buy or sell your property is very important. They will be responsible to help negotiate the terms and price with the other party, represent you in the transaction, coordinate all of the moving parts, and help protect you legally. It is wise to find someone you trust or someone who comes referred. Find time to interview them and then remain committed to them so you don't hop from broker to broker.
Brokers are held to a high standard in the Las Vegas valley. If they are associated with the Greater Las Vegas Association of Realtors (GLVAR) then they have guidelines and a code of ethics to adhere to. A great broker will save you time, effort, and money in the long run.