Tommy Choi co-founded the Weinberg Choi Residential team in 2007 with his business partner Josh Weinberg—and in January 2017, they celebrated the opening of their own Keller Williams brokerage. The Weinberg Choi Residential team has sold over 1,100 properties and over $600 million in sales volume. They are consistently ranked in the top 10 real estate teams in Chicago, which puts them in the Top 1% of the Chicago Association of REALTORS®' top producers. Choi also served as the 135th president of the Chicago Association of REALTORS® and the first Korean-American president in the association's 135-year history. He also serves as an active member of the Illinois REALTORS® and was the 2021 Vice President of Association Affairs for the National Association of REALTORS®. in 2020, Choi received REALTOR® of the Year from the Chicago Association of REALTORS® and was recognized in the 2020 class of Crain’s Chicago 40 Under 40.