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Business Details
50+ Years
experience
Custom Garage Builders in Sun Prairie, WI
American Garage Builders has been a trusted name in garage construction since 1973, delivering high-quality, custom-built garages across Wisconsin and Northern Illinois. Our family-owned business combines over 100 years of collective experience with precision craftsmanship to create durable, code-compliant structures tailored to individual needs. We prioritize customer satisfaction through personalized consultations, premium materials, and lifetime warranties on key components.

Our process includes site preparation, permit acquisition, and precision-cut panelization in controlled environments, ensuring efficiency and reliability. With locations serving over 20 Wisconsin counties and neighboring Illinois areas, we remain committed to enhancing property value through American workmanship and transparent service.
Services
Custom Garage Building Vinyl Siding Installation Overhead Door Installation Truss Construction Concrete Work
Details
  • Year established: 1973
Highlights and features
  • We have over 100 years of combined experience in garage construction.
  • Our garages use name-brand, industry-leading materials for durability.
  • We offer lifetime warranties on key components like siding and trusses.
  • Our family-led team prioritizes personalized service and attention to detail.
  • We handle permits, demolition, and site preparation for seamless projects.
Services
Custom Garage Building
We design and build custom garages tailored to individual storage needs and aesthetic preferences. Our process includes site preparation, precision-cut panelization, and expert installation. Each structure uses kiln-dried lumber, engineered trusses, and premium siding for durability.
Vinyl Siding Installation
Our .042-gauge vinyl siding ensures low maintenance and weather resistance. Installation includes structural sheathing and mastic for enhanced durability. Lifetime warranties cover siding against defects for as long as you own the garage.
Overhead Door Installation
We install insulated steel overhead doors with baked-on enamel finishes and hurricane clip tie-downs. Doors include steel expansion H-clips and GAF shingles for weatherproofing. Lifetime warranties cover sag-free performance.
Truss Construction
Engineered house trusses are state-certified for safety and durability. Our framing mill uses automated presses and nailing equipment to ensure precision. Optional storage and attic trusses are available for added functionality.
Concrete Work
We pour 4-inch monolithic concrete slabs with 6-bag mix rated over 4,000 PSI. Features include thickened edge perimeters, compacted fill bases, and sloped floors for drainage. Concrete anchor bolts ensure structural stability.
Questions
What areas do you serve?
We serve all of Wisconsin, including Madison, Milwaukee, and Green Bay, as well as Northern Illinois areas like Rockford.
Do you offer financing options?
Yes, we provide financing options to make custom garage construction accessible and affordable for our customers.
What warranties do you provide?
We offer lifetime warranties on vinyl siding, overhead doors, trusses, and headers for as long as you own the garage.
Can you help with permits and demolition?
Yes, we handle permit applications and existing structure demolition, including concrete removal, to prepare your site.
What materials do you use?
We use kiln-dried lumber, engineered trusses, .042-gauge vinyl siding, and 4,000 PSI-rated concrete for durability.