Business Details
37 Years
experience
Emergency
services
Expert Construction Services in De Pere, WI
IEI General Contractors has been delivering comprehensive construction solutions in northeastern Wisconsin since 1989. Founded by Mike Johnson and Brad Deprez, our company combines decades of industry experience with a commitment to open communication and collaborative project execution. Our team self-performs critical trades including carpentry, masonry, and concrete work, ensuring quality control across all phases of construction. As active members of the Associated General Contractors of Wisconsin, we maintain strong industry partnerships while supporting local apprenticeship programs in skilled trades. Our approach emphasizes proactive planning, budget transparency, and sustainable building practices tailored to each project's unique requirements. With leadership personnel maintaining continuous involvement since our founding, we've cultivated a reputation for minimizing construction stress through consistent communication and technical expertise.Our portfolio spans facility maintenance, historical renovations, and new construction projects for commercial, healthcare, and public sector clients. We prioritize operational continuity during renovations, employing temporary partitions and air quality controls to minimize client disruption. Recognized with multiple Historical Preservation Awards, our team demonstrates exceptional capability in both modern construction and heritage building restoration. This combination of technical proficiency, community engagement, and client-focused service delivery positions us as a trusted partner for complex construction projects throughout Wisconsin.
Services
Facility Maintenance
Additions/Renovations
Project Management
New Construction
Non-Profit Purchasing
Details
- Year established: 1989
Highlights and features
- We offer 30+ years of continuous construction expertise since 1989
- Our team self-performs critical trades including carpentry and masonry
- We maintain active membership in Associated General Contractors of Wisconsin
- We provide guaranteed 24/7 project assistance and support
- Our collaborative approach ensures client interests remain central to every project
Services
Facility Maintenance
Our facility maintenance service addresses ongoing building needs without requiring new permits. We handle concrete repairs, masonry restoration, interior upgrades, and equipment installations while minimizing operational disruption. Our team ensures commercial properties maintain optimal functionality through proactive maintenance solutions tailored to each client's specific requirements.
Historical Renovations
Specializing in historical building preservation, we've earned multiple Associated General Contractors awards for heritage projects. Our expertise includes maintaining structural integrity while modernizing systems in landmark buildings like the Door County Community Center and Chase Stone Barn. We implement dust control measures and phased construction to protect historical elements during renovations.
Project Management
Our project management service coordinates all construction phases from budget planning to final execution. We maintain transparent communication between owners, architects, and subcontractors while implementing value engineering solutions. Our team provides detailed budget tracking, schedule optimization, and quality control measures to ensure successful project delivery within specified timelines and financial parameters.
New Construction
We deliver comprehensive new construction services focusing on sustainable building practices and long-term durability. Our collaborative approach involves weekly client updates and material quality assurance programs. We incorporate energy-efficient design elements while maintaining strict adherence to construction specifications and building codes for commercial and institutional projects.
Self-Performed Trades
Our vertically integrated model includes direct execution of carpentry, masonry, concrete work, and demolition services. This control over critical trades ensures quality standards and schedule reliability. Our certified tradespeople maintain active involvement in local apprenticeship programs, guaranteeing continued expertise development in traditional construction crafts.
People
Mike Johnson
Chairman of the Board
Co-founder with architectural drafting expertise and decades of construction management experience. Past president of multiple industry organizations and graduate of Northern Michigan University and Lawrence Institute of Technology.
Chris Berg
President
30-year company veteran specializing in project estimation and bid management. University of Wisconsin-Stout graduate with industrial technology degree who leads client communication initiatives and serves on YMCA Board.
Brad Deprez
Secretary/Treasurer
Co-founder and chief financial officer with accounting expertise from Northeast Wisconsin Technical College. Active in carpenters' apprenticeship programs and community organizations including Knights of Columbus.
Brandon Martzke
Vice President
Construction management graduate from Michigan Tech with purchasing and project management responsibilities. Serves on Carpenters Joint Apprenticeship Committee and oversees company technology systems.
Kevin Hanson
Board Member
Senior project manager with healthcare construction expertise, including major medical facilities in Green Bay and Marinette. Former Shopko Stores construction manager with architectural technology degree from Northeast Wisconsin Technical College.
Questions
What construction services does IEI General Contractors offer?
We provide facility maintenance, historical renovations, new construction, project management, and non-profit purchasing services for commercial and institutional clients.
How long has IEI General Contractors been in business?
Our company has been serving northeastern Wisconsin since our founding in 1989 by Mike Johnson and Brad Deprez.
Do you handle historical building renovations?
Yes, we specialize in historical preservation projects and have received multiple Associated General Contractors awards for heritage building restorations.
What areas do you serve?
We primarily serve northeastern Wisconsin, including Green Bay, De Pere, and surrounding communities.
Are your services available 24/7?
Yes, we provide 24/7 assistance for project-related questions and emergency construction needs.
Do you self-perform construction trades?
Yes, our team directly handles carpentry, masonry, concrete work, and demolition services to maintain quality control.
