Business Details
50+ Years
experience
Commercial & Industrial Construction Services
Founded in 1948, Capelle Bros. & Diedrich has built a legacy of excellence in commercial and industrial construction. Our commitment to safety, quality, and innovation has guided us through seven decades of delivering tailored solutions for clients across diverse sectors. With a team led by third-generation leaders Donald L. Diedrich and Todd A. Diedrichbacked by 49 and 28 years of industry experience respectivelywe combine technical expertise with unwavering integrity. Our skilled craftsmen, project managers, and estimators bring unparalleled precision to every phase of construction, from design-build collaboration to final execution.Recognized for our dedication to client satisfaction, we serve as a trusted partner in shaping facilities for education, retail, healthcare, manufacturing, and beyond. Through strategic partnerships like our collaboration with Nucor Building Systems, we ensure the highest standards of durability and sustainability. Our values-driven approach, centered on accountability and continuous improvement, reinforces our reputation as a regional leader in complex construction projects.
Services
Carpentry
Concrete
Design/Build
Masonry
Metal Buildings
Details
- Year established: 1948
Highlights and features
- We utilize a proven design-build process that optimizes project efficiency and cost control
- Our leadership team has over 70 combined years of construction management experience
- We maintain strict safety protocols with dedicated full-time safety personnel
- Our craftsmen specialize in precision execution for complex construction requirements
- We offer single-source accountability for complete project lifecycle management
Associations and certifications
- U.S. Green Building Council LEED Certified
Services
Design/Build
Our design/build methodology streamlines construction by combining architectural design and general contracting under a single contract. This approach reduces project timelines by 20-30% while maintaining budget control through collaborative problem-solving between engineers, architects, and contractors. With 75 years of collective leadership experience in this model, we ensure seamless transitions from concept to completion, prioritizing client communication and value engineering at every stage.
Metal Buildings
As authorized Nucor Building Systems contractors, we deliver durable custom metal structures optimized for functionality and aesthetics. Our solutions integrate steel with masonry and glass elements to create energy-efficient facilities for industrial, commercial, and agricultural applications. With LEED-certified expertise, we ensure 30% faster construction timelines while maintaining structural integrity for long-term cost savings in maintenance and energy consumption.
Concrete
Our concrete division handles projects from foundation footings to complete floor systems, using precision formwork and advanced curing techniques. Specializing in industrial applications requiring heavy-load capacity, we combine ASTM-certified materials with 48 years of in-house expertise to ensure structural longevity. Services include machine foundations, exterior pavement, and specialized concrete topping systems that meet strict dimensional tolerances for manufacturing facilities.
Masonry
Our masonry team constructs durable walls, fireplaces, and facades using traditional and modern techniques. With 28 years of specialized experience, we execute both structural and decorative applications for commercial and residential projects. Services include stone veneer installation, bricklaying to ASTM standards, and retaining wall systems engineered for Wisconsin's climate conditions, ensuring 50+ year service life in critical building elements.
Carpentry
From rough framing to finished cabinetry, our carpentry services support both new construction and renovation projects. With 42 years of continuous in-house expertise, we handle complex millwork, door/frame installations, and drywall systems that meet ADA accessibility requirements. Our LEED-certified team utilizes BIM technology for precise prefabrication, reducing material waste by 15% while maintaining tight tolerances in institutional and commercial settings.
People
Donald L. Diedrich
CEO
Civil Engineering graduate from University of Wisconsin-Madison with 49 years of industry leadership experience. Oversees project management and estimation while ensuring technical excellence in all construction deliverables.
Todd A. Diedrich
President
Architectural/Structural Engineering graduate from Milwaukee School of Engineering with 28 years of executive leadership. Manages design-build integration and client relations while maintaining technical oversight of complex projects.
Scott D. Diedrich
Vice President
25-year company veteran responsible for safety protocols and shop operations. Implements quality control systems that have reduced project rework by 40% while maintaining OSHA compliance across all job sites.
Questions
What construction services do you specialize in?
We offer carpentry, concrete, masonry, metal building systems, and integrated design-build construction for commercial, industrial, and institutional projects.
How long have you been in business?
Capelle Bros. & Diedrich has been serving Wisconsin since 1948 with three generations of construction expertise.
What geographic areas do you serve?
We operate primarily in Fond du Lac, WI and surrounding Wisconsin regions including Milwaukee and Appleton.
Are you LEED certified?
Yes, we've earned LEED certification for projects like the Cedar Ridge Wind Farm facility.
What industries do you work with?
We serve education, healthcare, manufacturing, retail, renewable energy, and institutional sectors with customized construction solutions.
How do you ensure project quality?
Through our design-build process, dedicated safety personnel, and craftsmen with 20-40 years of specialized experience maintaining strict quality control standards.
