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REBECCA THESSEN joined L3 Corporation in 2022 and has been in the commercial real estate brokerage industry for over 9 years.

A St. Louis transplant, Rebecca began her real estate career at Hilliker Corporation in 2015. Throughout that time, Rebecca was able to serve various clients throughout the St. Louis MSA over a broad spectrum of asset classes specializing in both office and retail real estate. A few notable clients include: Stifel Bank & Trust, Lathrop GPM, St. Louis Bank, Wag N’ Wash, etc. In 2023 Rebecca was recognized with the  CREW-St. Louis New Member of the Year award and in 2024 she was recognized with the CREW-St. Louis Catalyst: Leadership in Diversity Equity & Inclusion award.



  • ACF Property Management
  • Fireside Financial
  • InterPark
  • Jack Matthews Development
  • Midas Hospitality
  • Pier Property Group
  • Regency Centers


  • Auto Glass Now
  • Chuck’s Hot Chicken
  • Codes Dispensary
  • The Exercise Coach
  • Foot Solutions
  • Good Day Farm Dispensary
  • Higher Ground Education
  • Pan-Asia Supermarket
  • Prime Health Centers
  • Sunright Tea Studio
  • Wag N’ Wash

Rebecca is a licensed broker in Missouri and Illinois. Rebecca serves as an advisory board member of CREW St. Louis, a premier networking organization for women in the commercial real estate industry, and a member of Asian American Chamber of Commerce, engaging with Asian American businesses and professional in the St. Louis area. In addition, Thessen serves on the Young Friends Board at the Humane Society, making the world better for our four-legged friends, as well as the Young Friends Board at Forest Park Forever, to uphold Forest Park as one of America’s best public parks. In her free time, Rebecca enjoys hanging out with her husband and two fur babies while checking out all the new restaurants in the Lou.