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Justin Himelstein joins Colliers in Arizona

Award-winning agent serves as tenant representation broker

PHOENIX – Justin M. Himelstein joined Colliers in Arizona as a senior vice president handling tenant representation in the office and industrial properties sectors. The award-winning agent brings 18 years of experience to the position.

“We are thrilled to have Justin and his junior agent, Jake Bonnell, join the Colliers team,” says Senior Managing Director Bob Mulhern. “Justin has handled more than $1 billion in business during his career, representing a diverse group of corporate clients. His expertise, combined with our company platform and culture, promise to be a great match for Colliers’ clients.”

Himelstein recently served as a senior vice president in the Tenant Advisory + Workplace Solutions group at Transwestern. During his career, he  negotiated more than 750 transactions, representing tenants in a variety of industries. Himelstein was recognized as a “top producer” for 12 consecutive years. 
In addition to his commercial real estate career, Himelstein works diligently on community service endeavors. He is involved in the Arizona Animal Humane Society, Big Brothers Big Sisters of Arizona and Hospice of the Valley. He also volunteers with Madison Little League. 

Himelstein holds a degree in Business Real Estate from University of Arizona and is an active member of NAIOP.

About Colliers
Colliers (NASDAQ, TSX: CIGI) is a leading diversified professional services and investment management company. With operations in 62 countries, our 17,000 enterprising professionals work collaboratively to provide expert real estate and investment advice to clients. For more than 27 years, our experienced leadership with significant inside ownership has delivered compound annual investment returns of 20% for shareholders. With annual revenues of $4.3 billion and $77 billion of assets under management, Colliers maximizes the potential of property and real assets to accelerate the success of our clients, our investors and our people. Learn more at, Twitter @Colliers or LinkedIn.


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Bob Mulhern

Senior Managing Director


Colliers in Arizona is a full-service commercial real estate firm, providing integrated services to clients locally and globally for more than 40 years. As senior managing director, Bob Mulhern manages brokerage operations for the Colliers offices in Phoenix and Scottsdale, with more than 100 professionals and staff.

Bob and his team provide a full range of services to owners, investors, occupiers and developers of real estate. Their goal is to deliver superior services to clients and assist with all their commercial real estate requirements, regardless of location.

As a well-respected industry veteran with more than 35 years of experience, Bob has a highly successful track record managing brokerage, development and property management organizations. Prior to joining Colliers in 2009, Bob was president of Reliance Companies for five years. Reliance is a Phoenix-area development firm, specializing in office and industrial development and property management.

Previously, Bob served as vice president of development for four years at Ryan Companies, a nationally recognized developer, design-builder and real estate manager. His experience includes six years at CBRE in Phoenix as the senior managing director and designated broker. In addition to brokerage and development experience, Bob has managed more than 10 million square feet of commercial inventory.

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Justin Himelstein

Senior Vice President l Office Properties


Justin Himelstein is a senior vice president with Colliers, exclusively representing tenants and users on a local and national scale. Areas of expertise include lease negotiations and renewals, relocations, space expansions and consolidations, customized real estate strategies, acquisition and disposition, operating expense audit, lease abstract, and build-to-suit projects.

Justin specializes in exclusive tenant representation and offers his clients a streamlined approach based upon extensive market knowledge, which generates leverage in the marketplace for his clients.

By leveraging market insight and operational expertise from across proprietary databases, Justin ensures that his clients are both informed and protected from pitfalls of commercial real estate. He aggressively negotiates on behalf of his clients in order to mitigate risks and minimize costs.

Justin has nearly two decades of experience providing comprehensive market knowledge and is able to quickly understand and assimilate industry trends into data sets to help his clients make informed decisions and identify incentive programs.

Well known as a broker who shows unyielding client loyalty, proficient market knowledge, and transaction timeliness, Justin’s reputation for client advocacy is unmatched in his field of expertise.

Prior to joining Colliers, Justin served as senior vice president at Transwestern Real Estate Services, a privately held real estate firm of collaborative entrepreneurs who deliver a higher level of personalized service and innovative client solutions. In his time there, he was a member of the tenant advisory + workplace solutions, received the rookie of the year award in 2006, was awarded the national rising star award in 2011, and qualified as a top producer for twelve consecutive years.

As an exclusive tenant representation broker, Justin was involved in more than 750 transactions exceeding $1 Billion in total consideration. Over the last 18 years, Justin has assisted companies like Stewart Title,, State Bar of Arizona, Sundt Corporateion, Tallwave, Ogletree Deakins, NetApp, Experian, Garmin, RSM, Levine Investments, The Weitz Company and

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