Thanks for stopping by! We’re pleased to announce that Rentenbach Constructors Incorporated is now officially known as The Christman Company. Christman acquired Rentenbach in a merger of the two privately-held firms in December 2013 and the company’s Knoxville, TN and Greensboro, NC offices continued operating under the Rentenbach name for several years but are now moving forward under the Christman brand.

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Zachary J. Bosma, LEED AP

    Zachary J. Bosma, LEED AP
    Project Executive, West Michigan
    Western Michigan University, B.S., Construction Science and Management 

    As a project executive in Christman's West Michigan office, Zac provides leadership on complex projects throughout the Grand Rapids area, including the Interurban Transit Partnership Silver Line Bus Rapid Transit System, Western Michigan University Campus Dining Facility and Gerald R. Ford International Airport Terminal Area and Parking Improvements. With over 20 years in the construction industry, Zac has extensive experience in estimating and scheduling, as well as budgeting, contracting and overall management of multi-million dollar projects. He demonstrates his dedicated, self-motivated attitude through his leadership and client-focused approach to ensure the success of each project. He is focused on adding value to every aspect of a project, from an idea to occupancy, through the eyes of the client.