About Connie Antoniou

Connie Antoniou, global real estate advisor of Jameson Sotheby’s International Realty in Illinois and Mahler Sotheby’s International Realty in Wisconsin, has been advocating for her clients for more than 35 years. From her 22-year tenure in the highly competitive Hinsdale, Illinois market to her achievements as Senior Vice President of Sales in Barrington, Illinois and her real estate ventures in Lake Geneva, Wisconsin, she boasts an impressive career. She has proudly owned and operated two Sotheby’s International Realty offices, selling and renting luxury homes to high-profile clients, including Chicago Blackhawks players and coaches and prominent Chicago entrepreneurs and executives. She was named the #1 agent in volume among the Chicagoland Northwest Office in 2015, 2017, 2018, 2019, 2020, 2021, 2022, and 2023. She’s also been the #1 North Barrington agent in 2021, 2022, 2023.