What must occur for a subagency relationship to be valid between brokers?

For a subagency relationship to be valid between brokers, it is essential that there is written consent from both the listing broker and the seller. This written agreement is crucial because it establishes the authority of the subagent to act on behalf of the listing broker in facilitating a transaction. In real estate, the duties and responsibilities of an agent are dictated by their agency relationship with clients, and without explicit permission from the seller, a subagent does not have the legal authority to represent the interests of the seller. This protects the interests of both parties in the transaction and ensures that all agents are operating within the bounds of the law and ethical standards set by the industry.

The other options do not fulfill the necessary criteria for establishing a valid subagency relationship. For instance, simply having consent from the buyer alone is insufficient, as it does not address the expectations and authority of the seller. The notion that either broker can represent both parties simultaneously lacks clarity in terms of agency representation, which can lead to conflicts of interest. Lastly, the idea that no consent is necessary if the buyer requests a showing undermines the fundamental principles of agency and consent involved in real estate transactions. Overall, the requirement for written consent ensures that all parties are informed and agree to the representation structure in