Who has the authority to modify the commission under the residential exclusive right to sell listing contract?

The correct choice is that the supervising broker for the listing firm has the authority to modify the commission under a residential exclusive right to sell listing contract. In a typical real estate transaction, the listing agreement establishes the commission structure between the seller and the listing brokerage. This agreement is a legal document that outlines the responsibilities and obligations of both parties.

The supervising broker typically oversees the operations of the brokerage and has the final say on contractual matters, including financial arrangements such as commissions. While the listing agent may suggest changes or negotiate terms with the seller, any modifications to the commission terms ultimately need to be approved by the supervising broker to ensure that they align with the firm's policies and legal obligations.

The buyer does not have authority over the commission agreed upon in a contract made strictly between the seller and the listing agent/brokerage. Similarly, while the seller can discuss and negotiate elements of the commission structure prior to signing the agreement, once it is signed, any modifications require the involvement of the supervising broker. The listing agent may not unilaterally change the commission without guidance or approval from the broker in charge.