Who we are

Tenant Advisory Group, LLC is a Chicago-based commercial real estate brokerage dedicated to getting each of our clients the absolute best deal possible.

Need a reason to work with TAG?

We will give you three.
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Bill brings over 20 years of experience to every tenant he represents. He is the only tenant representative in Chicago to hold the prestigious Certified Commercial Investment Manager designation. Tina, Cathy, Diana, and the rest of the TAG team each lend their own considerable experience and unique perspectives.
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Small and mid-sized businesses are seldom represented by large commercial real estate firms because lower commissions often fail to cover overhead costs. TAG holds ourselves accountable for providing smaller businesses with the same expertise that a larger corporation may afford.
Our goal is to represent your business.
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We hold to an open book policy when dealing with our clients. Our axiom is that directness and honesty in communication are the factors that build client confidence. We communicate all issues upfront, in a straightforward and timely manner, so that you are fully informed during the entire leasing process.

Company History

Tenant Advisory Group founder William “Bill” Himmelstein founded Tenant Advisory Group with the belief that every tenant deserves the expertise of an experienced broker. Today, his team of commercial real estate professionals lend their broad experiences and unique perspectives to each and every client.

Meet the Team

Working for your best interest
Founder, CEO & Managing Broker

William “Bill” Himmelstein

Read Bill's Bio
COO & Broker

Diana Himmelstein

Read Diana's Bio
Executive Vice President & Broker

Brian Cowell

Read Brian's Bio
Executive VP of Client Services & Broker

Tina Crnkovich Kearney

Read Tina's Bio