We operate from our 38,000 square foot McMahon Group Headquarters in Neenah, Wisconsin, as well as from branch offices in Valparaiso, Indiana and Machesney Park, Illinois.

Our project portfolio includes manufacturing/industrial facilities, commercial, education, institutional, recreational, civic, public works and water/wastewater treatment plants. Our history of repeat service shows the success of our commitment to providing our clients with high-quality projects, on time and within budget.

Consisting of over 150 professional Architects, Engineers, Surveyors and
Support staff, our workforce has a diverse range of practice across the design and construction disciplines.

We emphasize project management in all aspects of our design work, ensuring quality and needs are fully met.