Ari Topper, CFA
Managing Director / Broker

Ari joined Baum Realty in 2018 as the founder of the Urban Office & Industrial Division, bringing with him 17 years of combined experience in commercial real estate and finance. Prior to joining Baum Realty, Ari spent 8 years as a broker at Jameson Commercial where he specialized in investment sales, commercial leasing, and investment advisory services. A top agent there, year after year, he was Jameson Commercial’s top producing agent in 2017.

Ari possesses a unique background having worked as a financial analyst on Wall Street prior to his career in real estate. His underwriting and financial modeling expertise, combined with his strong negotiating skills and deal making prowess, allows Ari to effectively serve his clients’ interests in a multitude of ways. His experience includes a wide variety of asset classes including office, industrial, retail, multi-family, and development land.

Ari holds the highly regarded Chartered Financial Analyst (CFA) designation, the LEED-AP designation, and is a licensed real estate salesperson in the State of Illinois. He earned his Bachelor of Business Administration degree from the Stephen M. Ross School of Business at the University of Michigan with a concentration in finance. Ari was named as one of Crain’s Chicago Business Most Influential Commercial Real Estate Brokers of 2017.

Tyler Dechter
Senior Associate / Broker

Tyler joined Baum Realty in March 2018 and works on both leasing and sales assignments for Baum Realty’s Urban Office & Flex and Investment Sales Divisions. A vital team member, Tyler has made key contributions to multiple successfully completed sales and leasing transactions. Tyler’s primary focus is on all aspects of property due diligence and underwriting. Additionally, he provides landlord representation services and market analysis to a portfolio of office and flex-industrial properties throughout the greater Chicago area.

Prior to joining Baum Realty, Tyler held an analyst position at Simon Property Group (NYSE: SPG). During his time at Simon, Tyler prepared lease analysis on rent spreads, occupancy, kick-outs for key retailers, and prepared all applicable bills in accordance with lease terms and resolved tenants’ problems regarding billings and lease language.

Tyler is an active member of ICSC, Urban Land Institute (ULI), Young Real Estate Professionals (YREP), and The Junior Council of Lurie Children’s Hospital. Tyler is a licensed Illinois Real Estate Broker.

Tyler was born in Northbrook, IL and graduated from Butler University, earning his bachelor’s degree in finance. When not in the office, Tyler can be found on the golf course or spending time with family and friends.

Owen Wiesner
Associate / Broker

Owen joined Baum Realty in June 2021. As a member of the firm's Investment Sales and Urban Office & Flex teams, Owen provides significant contributions to current leasing and investment sales assignments including conducting due diligence, market research, and proactively seeking out new business opportunities.

Prior to joining Baum Realty, Owen interned at CapRock Real Estate on the acquisitions team where his primary focus was finding investment grade multifamily buildings in secondary and tertiary markets that met acquisition criteria. This included conducting demographic market analysis, due diligence, and interfacing with owners and brokers to establish meaningful connections. Owen also interned at Kentucky’s largest private real estate investor of Class A buildings that specialized in ground up office building developments.

Owen is an active member of the Real Estate Investment Association (REIA) and the DePaul Real Estate Alumni Alliance (DREAA).

Owen graduated Cum Laude from DePaul University’s Driehaus School of Business, earning a bachelor’s degree in real estate with a minor in photography. Prior to DePaul, Owen attended Western Reserve Academy in Hudson, OH. When not in the office, Owen enjoys his free time spent biking, golfing, and skiing.