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McMahon Associates, Inc.

McMahon Associates, Inc.


Architects & Engineers

About Us

McMahon has provided professional engineering and architectural services to our valued customers for more than a century. Our team includes 150 professional engineers, architects, surveyors, technicians, field personnel, and administrative specialists, working from offices in Wisconsin, Illinois, and Indiana. They share the common goal of delivering our services ‘The McMahon Way’. That means we strive to build long-term client relationships by combining strong core values with a culture for success. We do an extensive amount of work in the communities where we live and throughout the Midwest. But we have also provided professional services in locations spanning the United States, and even internationally.

Great emphasis is placed on adding value to all phases of a project. This “Value-Added” business philosophy, combined with our diverse design capabilities contribute to our solid history of repeat business. McMahon is also well-known for implementing sustainable design principles into our projects, including LEED® design standards, Lean practices, and waste-to-energy technologies.