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Thomas Duke is a full service commercial real estate firm - supporting property owners, investors, and tenants in Southeast Michigan for over 40 years.


We provide the premium services of a global firm, with the personal experience only a smaller firm can provide. With five generations of commercial property experience, Thomas Duke has earned its place as a regional leader in commercial real estate.

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Thomas A. Duke

CCIM, Senior Partner

Great-grandson of the immigrant Thomas, this Thomas Duke plunged into business independently and singlehandedly, having seen in his elders the value of learning from the ground up.

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Mark W. Szerlag

CCIM, Senior Partner

Mark excels in the sale of both user and investment properties as well as land. With his background in personal direct marketing, analysis, and research, he provides clients with systematic solutions to their real estate needs.

Steve Valli portrait
Steve Valli

Partner

As Partner of the Thomas Duke Company, Steven Valli has completed over 500 commercial real estate transactions totaling more than $500 million.

Meet our Team

GetReal success

March 6, 2024

The Art of Relationship-Driven Real Estate

Steve Valli

In 2003, I called a potential client and asked him to meet me at a 5-unit strip center in Farmington Hills. For years I’d been proposing property purchases to him , but none was quite...

October 12, 2023

In a Challenging Market, Creativity is King

Jordan Schafer

In a market of rising interest rates and the uncertainty that it brings, the Thomas Duke Company’s Jordan Schafer and Dave Tesch successfully brokered the sale of 2335-2337 Alger Drive in Troy, Michigan, at $89...

July 12, 2023

Asking Price – Not the Only Element

Steve Valli

My client needed a building right away—the kind of challenge I like. But he needed a light industrial building—the kind of challenge that, in this market, makes me pause. The demand and pricing for light...

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GetReal legacy

Five Generations of Dukes in Detroit

In the 1880s a young Thomas Duke left Nova Scotia for Detroit, tools in hand. He set about using them to construct commercial buildings, like the Detroit Sanitarium, in a city fast expanding with new manufacturing and business.

His son George left grade school to work with cement crews. Later he expanded his skills and began constructing not only commercial buildings but also hundreds of semi-custom homes from Detroit to Ypsilanti, before the depression and following World War II.

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