The Dual Agency Trap: Why One Real Estate Agent Working for Both Sides Can Cost You Thousands

You hire a real estate agent because you trust they will fight for your interests. But what happens when that same agent is also working for the other party? It is called dual agency, and it is legal in many states. It is also one of the most common forms of real estate agent misconduct that quietly drains money from middle-class Americans. If you are between 45 and 64, you have likely done a few real estate deals by now, and you may think you know the ropes. But dual agency is a trap that even experienced buyers and sellers fall into, because the conflict of interest is rarely explained in plain English.

When an agent represents both the buyer and the seller in the same transaction, they owe a fiduciary duty to both sides. That sounds fair in theory. In practice, it is impossible. A fiduciary duty means the agent must act in your best interest, disclose all material facts, and negotiate the best deal for you. How can one person do that for two parties who want opposite outcomes? The seller wants the highest price. The buyer wants the lowest price. The agent cannot push for both without breaking a promise to one of them.

Most dual agency situations arise when a buyer walks into an open house or calls the listing agent directly. The listing agent is working for the seller. But if that agent starts helping you write an offer, they may switch hats and become a dual agent. You might not even realize it because the paperwork is buried in a stack of documents you sign without reading. Some states require written disclosure, but the disclosure is often a single sentence in fine print. Agents are trained to handle it as a routine matter, not as a serious conflict of interest.

The real danger is not just that the agent splits their loyalty. It is that they stop sharing critical information. In a normal buyer-agent relationship, your agent tells you everything they know about the seller’s motivation, the property’s history, and any pressure points that could lower the price. In a dual agency, the agent cannot share that information without violating the other client’s trust. They become a middleman who processes paperwork and collects a commission that is often double what a single-sided agent would earn. You lose the advice you paid for.

Consider a common scenario. A seller lists a home at 350,000 dollars but privately tells the listing agent they would accept 320,000 because they need to move quickly. A buyer who works with the listing agent as a dual agent will never hear that number. The agent is legally barred from revealing it. The buyer ends up offering 340,000 and feels good about beating the asking price. The seller walks away with more than they needed. The agent walks away with a full commission from both sides. The buyer overpaid by 20,000 dollars and never knew they had a chance to save it.

The same problem cuts the other way. A buyer might tell their agent they are willing to go up to 400,000 for the right house, but they want to start at 370,000. Under dual agency, that agent cannot tell the seller the buyer’s top number, but they also cannot aggressively negotiate for the buyer because they know the seller’s bottom line. The result is a deal that satisfies neither party fully, but the agent gets paid twice.

For middle-class Americans, who often have most of their net worth tied up in their home, a 20,000 dollar mistake is not a small inconvenience. It is a setback that affects retirement plans, college funds, or the ability to move to a better school district. The real estate industry counts on people not asking questions. They count on the confusion of a busy transaction and the assumption that a licensed professional would not put you in a bad spot.

What can you do? Before you sign any representation agreement, ask one question directly. Ask whether the agent will ever represent both you and the other party in the same deal. If the answer is yes, you have two options. You can insist on an exclusive agency agreement that prohibits dual agency. Or you can walk away and find an agent who will work only for you. Some states allow designated agency, where different agents in the same brokerage represent each side, but that is not the same as true single representation. Even then, the brokerage has a financial interest in closing the deal, and that pressure can influence how information flows.

Do not assume that a big name brokerage or a friendly face means you are protected. Dual agency is not illegal in most places. That does not make it ethical. It is a business practice designed to maximize agent income at your expense. The middle-class buyer or seller should never accept a situation where the person guiding them through the most important financial decision of their lives has divided loyalties. You would not hire a lawyer who also represents the opposing party in a lawsuit. You should not hire a real estate agent who does the same thing.

If you are already in a transaction and discover the dual agency after the fact, you may have legal recourse. Many states require full informed consent, and if the disclosure was buried or rushed, you might be able to void the contract or seek damages. But the smarter move is to avoid the problem entirely. Ask the question before you sign. Read every disclosure. And remember that the agent who holds the open house may be nice, but they are not your friend. They are working for the seller. If you want someone in your corner, you need your own agent, your own advocate, and your own loyalty.