Pinpointing a single definitive individual as the absolute richest real estate agent in the United States is challenging due to the private nature of individual brokerage commissions and portfolio holdings. However, ultra-luxury brokers and founders leading massive multi-state teams—such as Mauricio Umansky of The Agency or Ryan Serhant of Serhant—frequently rank among the wealthiest and most commercially successful figures in American residential real estate, accumulating substantial net worths through multi-billion-dollar cumulative sales volumes, brokerage equity ownership, television production ventures, and high-end franchise expansions.