Sullivan designBUILD is a general contractor in the Madison, WI area specializing in commercial construction. Car dealerships, office, Industrial, medical and educational buildings are our specialties. designBUILD We pioneered the designBUILD concept in Madison in the late 60's, meeting our clients' unique needs by providing one source from concept (planning and design) to completion (construction and occupancy). From architecture, interior design and engineering to construction, maintenance and sustainability, we provide in-house designBUILD serves with unsurpassed value and efficiency; yesterday, today and tomorrow. AUTOMOTIVE. Details.Details. Each automotive facilities' operation and construction has unique details. When it comes to designing and building automotive facilities we KNOW the details.