Michele Prentice

Gary Grochowski, SIOR is a Senior Vice President & Director of Agency Leasing in the Southeastern Michigan Region. He has extensive knowledge and experience in office, medical, and hi-tech properties throughout the Midwest. Gary's focus is in the sales and leasing of office properties and he has transacted various asset classes, including industrial, land and multi-family. Since being licensed in 1999, he has completed in excess of 500 transactions. 

Responsibilities include expansion and development of the office leasing portfolio and encompass all aspects of the commercial real estate business: sales, leasing, asset management, corporate solutions, valuation and capital services.

Based in Colliers International's Southfield Office, Paul Choukourian serves as the Executive Managing Director and Market Leader for the Southeast Michigan Region with locations in Ann Arbor, Birmingham and Southfield.

Responsibilities include oversight in all aspects of the commercial real estate business: sales and leasing, education and training, recruitment and the regional philanthropic endeavors.

Additionally, within Colliers, Paul serves on the United States Managers Steering Committee.

Paul began his career with a small office development firm which allowed him to work in multiple aspects of the commercial real estate industry including land assemblage, property acquisition and disposition, construction, property management, leasing and investment sales.   Paul then chose to focus on commercial real estate leasing and sales in the office and industrial segments with large public and private organizations for Liberty Property Trust in Michigan and Tampa, Florida and for KIRCO in Metro-Detroit prior to joining Colliers International.

The role of National Executive Managing Director, Real Estate Management Services, requires an attention to detail, ability to understand clients’ needs, and in-depth knowledge of every step of the property management cycle.   I am responsible for the delivery of service excellence in property operations, business development and strategic implementation of the Colliers platform, nationally. Over the course of my 20+ years in commercial real estate, I’ve held every position in property management, except for maintenance, giving me the experience to understand the importance of each role.  I understand the operational side of the asset, how our teams need to react and how to set strategy. I work closely with the President, U.S. Asset Services to ensure our clients’ needs are not only met, but that we exceed expectations. 

I began my career in the U.S. Marine Corps, which gave me a strong foundation built on trust, integrity and being a partner in something much larger than just my role. I am a boots-on-the-ground leader, unafraid to get in the trenches and will do whatever is necessary to make sure the job is done right, on time and by the best team Colliers has.

I particularly appreciate the Colliers mindset that while we are an international company, we have an entrepreneurial spirit where we can work with our resources to fit the needs of our clients.  We don’t set the rules and expect our clients to follow them, we partner with our clients to create the best strategy and outcome possible.

When Justin Duncan joined Colliers International in 2017, he brought with him over five years of experience in the commercial real estate industry. Prior to joining the team, he worked with one of Southeast Michigan's largest regional companies, holding a diverse array of positions during his tenure. His experience includes financial analytics and valuations, having worked on a cadre of complex deals across all asset types and classes, in over 15 states. This experience was put to practical use when he became engaged in property and asset management, helping to maximize returns on carefully selected capital improvements and other investments to attract, retain, and stabilize tenancy at properties under his management; REO management and distressed asset turnaround is a particular specialty of his. Justin also works closely with key persons in all divisions of Colliers to drive new business development and expand the footprint of the Colliers brand throughout the region. 

Bryan Barnas is an Associate Vice President at Colliers Detroit. Bryan has been working in different specialties of real estate over his tenure. This experience includes high profile dispositions, medical redevelopments, multi-location roll outs, and stabilizing office properties.

Over the last 5 years, Bryan has been responsible for over 2.5 million square feet of lease transactions and $180 million dollars of sales transactions.