Fond du Lac, WI

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While Ahern’s Fond du Lac campus is home to its corporate headquarters, prefabrication shops, and company-wide support operations, our primary focus is meeting clients’ construction and service needs. We deliver a complete line of mechanical, fire protection, and pipe fabrication contracting throughout the surrounding area, and offer extensive experience to general contractors, building owners, facility managers, and construction partners.


  • 24.15 acres
  • Shop/Office Space - 247,000 sq ft

Our corporate facility is commonly toured and showcased for its sustainable construction components that led to our LEED Gold certification. We invite you to learn more about our environmental focus and how we can improve the efficiency of your facility.


J. F. Ahern Co.
855 Morris Street
Fond du Lac, WI 54935
United States



43.7546636, -88.4563615

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