A duty of loyalty is one of the most fundamental fiduciary duties owed by an agent to his principal. This duty obligates a real estate broker to act at all times solely in the best interests of his principal to the exclusion of all other interests, including the broker’s own self-interest.

Subagent: A subagent owes the same fiduciary duties to the agent’s principal as the agent does. Subagency usually arises when a cooperating sales associate from another brokerage, who is not representing the buyer as a buyer’s representative or operating in a non-agency relationship, shows property to a buyer. In such a case, the subagent works with the buyer as a customer but owes fiduciary duties to the listing broker and the seller. Although a subagent cannot assist the buyer in any way that would be detrimental to the seller, a buyer-customer can expect to be treated honestly by the subagent. It is important that subagents fully explain their duties to buyers.