- February 5, 2026
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Trey Carswell has worked at Avison Young, a Toronto-based brokerage that bills itself as “the world's fastest-growing commercial real estate services firm,” since September 2013, joining the firm as a principal. Prior to Avison Young, Carswell was a director and founding member of Lane Witherspoon & Carswell Commercial Real Estate Advisors; worked in developer Trammell Crow Co.'s Tampa office; and spent three years with GVA Advantis. Founded in 1996 through a merger of two Canadian firms, Avison Young today has 79 offices and more than 2,400 real estate professionals.