What role can broker Steve assume when a buyer expresses interest in writing a contract but he has a seller agency?

When a broker operates under a seller agency agreement, he primarily represents the interests of the seller. In this context, if a buyer expresses interest in writing a contract, the broker can assume the role of a customer. This means that the broker does not act as an agent for the buyer but instead provides information and answers questions while maintaining a fiduciary duty to the seller.

The role of a customer implies that the broker acknowledges the buyer's interest but does not advocate for or represent the buyer's interests as an agent would. The broker can provide necessary information about the property and assist with the transaction process, but any negotiations or contract writing would typically need to be done through a separate buyer's agent unless the buyer decides to proceed without representation.

Taking on different roles, such as dual agent or buyer agent, would conflict with the fiduciary responsibilities owed to the seller under the seller agency agreement unless proper disclosures and agreements are made. Therefore, the most appropriate and permissible position for Steve under these circumstances is that of a customer for the buyer.