Tommy co-founded Weinberg Choi Residential in 2007 with his business partner Josh Weinberg. They celebrated the opening of their own Keller Williams Market Center in January 2017. Since that time, the Weinberg Choi Residential team has sold over 800 properties and earned more than $300 million in sales volume. They are consistently ranked in the top 25 real estate teams in Chicago, which puts them in the top 1 percent of producers in the Chicago Association of REALTORS®.
Tommy is currently president-elect of the Chicago Association of REALTORS®. He will become the 135th president of CAR and the first Korean-American president in the association's 135-year history. He is an active member of the Illinois REALTORS® and the co-chair of the National Association of REALTORS® YPN Advisory Board.