The Differences Between Realtors and Real Estate Agents The Differences Between Realtors and Real Estate Agents Definition 1. Real estate agents represent both buyers in sellers’ transactions. They are responsible for helping their clients buy, rent, or sell properties and must adhere to strict legal and ethical guidelines set forth by their state’s Real Estate Commission. 2. A realtor is an agent of real estate who is a member of National Association of Realtors. To become a Realtor, an agent must be a member of the NAR. They also have to agree to adhere to the strict code of ethics