Doug Renner
Managing Director / Broker

Douglas Renner joined Baum in 2006 bringing with him over a decade of retail experience. As a Managing Director at Baum, his focus is to oversee third party leasing representation for owners, developers, and investors of retail shopping centers, single tenant investments, mixed use developments and portfolio management of disposition assignments. Doug’s clientele range from big-box grocery anchored centers and urban infill mixed use retail to single tenant net lease assets.

Doug has a 20+ year track record of success and has been responsible for lease and sale transactions valued in excess of $700 million and 2 million square feet. Doug’s successes include implementing market strategies for national, regional and local tenants as well as developers and investment landlords. Notably, Doug was responsible for leasing a competitive stretch of North Michigan Avenue between 2 and 20 North Michigan to Starbucks, Panera, and Remington’s Restaurant that changed the complexion of the street.

Past and present clients include Newcastle Limited, Duetsche Bank, RREEF, Structured Development, Cedar Street Capital, Convexity, R2 Companies, Excess Space (on behalf of CVS Pharmacies), 4 Star Restaurant Group (Remington’s, Windsor, Smoke Daddy and Crosby’s Kitchen), Home Run Inn Pizza, Cosi, Lane Bryant, Fashion Bug, Harbor Freight Tools, Harlem Irving Companies, Prime Group, Capri Capital, and Regency Centers.

Doug is an active member of the International Council of Shopping Centers, Chicago Commercial Real Estate Networking Club, Corporate Real Estate and Retail Site Selection Professionals. In 2014, he was a CoStar Power Broker Award winner. Charitably, he is involved in the Chicago Real Estate Annual Food Drive for the Greater Chicago Food Depository, Opportunity Through Baseball, providing education and skill coaching for at risk children, Gilda’s Club and other national and local causes.

Doug holds a BA and a Master’s Degree both from the Ohio University.

Ari Topper, CFA
Managing Director / Broker

Ari joined Baum 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, 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 recently named as one of Crain’s Chicago Business Most Influential Commercial Real Estate Brokers of 2017.

Will Crowden
Director / Broker

Will Crowden specializes in the sale and leasing of urban and suburban retail properties. Over his fifteen-year career, Will has worked closely with many institutional property owners and developers on the product side, and has exclusively represented many local, national, and international tenants in the Chicago market and several throughout the country. Will can effectively service a small growing brand and has earned the reputation of being a national retail specialist acting as the real estate point person on multi-unit national roll outs. Will has been a leader in the commercial real estate industry for more than 15 years, and has successfully represented dozens of property owners including Macerich, Newcastle Limited and The Sterling Bay Companies and has also performed extensive workout services with many local and national banks, including Bank of America, JP Morgan Chase Bank and MB Financial, helping them dispose of numerous troubled assets. Will is a trusted advisor to several retailers – including Fortune 25 and 200 companies. He has exclusive relationships with Marathon Petroleum, Starbucks Corporation, Blaze Pizza, PDQ, MedSpring Urgent Care among others.

Prior to joining Baum, Will served as a Vice President at Jameson Commercial, where he primarily focused on the sale of retail properties and net leased investment properties, retail leasing and landlord representation. Will’s additional experience includes serving as a Senior Associate for Sperry Van Ness, a national commercial real estate firm in Chicago, where he worked on the sale of commercial condominiums and the leasing of commercial space, in addition to landlord / owner representation and handling net leased investments. Will’s commercial real estate career began as an Asset Manager for Joseph Cacciatore & Company in Chicago, managing over one million square feet of commercial property throughout the Chicagoland metropolitan area.

Will served on the Board of Directors at The Chicago Association of REALTORS® (CAR) for two consecutive terms and was also the 2012 and 2013 Chair of CAR’s Commercial Forum Committee. He is an active member of the International Council of Shopping Centers (ICSC), a founding member of CAR’s Young Professionals Network (YPN) Advisory Board and a member of the Real Estate Investment Association (REIA).

Trevor Jack, CCIM
Associate / Broker

Trevor Jack joined Baum in January of 2014. He provides landlord representation services to a portfolio that includes listings both in the city and suburbs of Chicago. Trevor currently is tasked with leasing responsibilities for City Hyde Park as well as properties in Roscoe Village, Lincoln Park, Logan Square, Wicker Park, and Naperville.

Prior to joining Baum, Trevor interned with Cushman & Wakefield in their retail brokerage division where he canvassed for tenants looking to enter the Chicago market, abstracted leases, analyzed market data and developed briefings.

Trevor is an active member of the International Council of Shopping Centers, Urban Land Institute, and the CCIM Institute.

Trevor graduated from the University of Illinois Urbana-Champaign where he earned a Bachelor of Arts degree in Urban & Regional Planning. Trevor is a licensed real estate broker in the state of Illinois and is a LEED Green Associate.

Mark Fredericks
Associate / Broker
Mark Fredricks joined Baum’s Landlord Representation team in 2017, bringing with him more than ten years of professional expertise in all aspects of the leasing retail shopping centers.

Mark carries a high level of skill and an impressive track record of success in leasing grocery anchored centers, multi-tenant outlots, urban retail sites, and suburban strip centers. His talent for identifying prospects for retail strip centers, researching and interpreting tenant’s business and financial sustainability, negotiating letters of intent and leases has been praised by local and national clients alike.

Prior to joining Baum’s Landlord Team, Mark worked for Regency Centers, Edgemark CRE, and The Lord Companies. Mark has leased multiple power center developments within the Chicagoland area, including junior anchors and outlots, re-merchandised and leased lifestyle centers as well as multi-tenant outlot buildings. He was responsible for the leasing of a 17 property portfolio of grocery anchored shopping centers, totaling over 2.8 million square feet throughout Illinois, Indiana and Minnesota.

Mark graduated from Florida State University with a Bachelor of Science in Marketing. He has been a licensed Real Estate Broker since 2007 and is a member of the International Council of Shopping Centers. Mark lives in Chicago with his wife and son.
Tyler Dechter
Associate / Broker

Tyler joined Baum in 2018 as an Associate in the Urban Office & Industrial Division. He provides landlord representation services to a portfolio that includes listings both in the city and suburbs of Chicago. Tyler is currently tasked with leasing responsibilities in West Town, Fulton West, and Bucktown. He is responsible for market analysis, canvassing, marketing, and assisting with showings for each property within the portfolio.

Prior to joining Baum, Tyler held an analyst position with Simon Property Group where he prepared lease analysis on rent spreads, occupancy, and kick-outs for key retailers, prepared all applicable bills in accordance with lease terms, and resolved tenants’ problems regarding billings and lease language.

Tyler graduated from Butler University where he earned a Bachelor of Science in Finance. Tyler is a licensed real estate broker in the state of Illinois. In his free time, you can find Tyler on the golf course.