Nantz Contracting is a family-owned business dedicated to transforming homes across Southeastern Wisconsin with quality, lasting exterior improvements. With years of hands-on experience, we specialize in windows, doors, and siding, combining craftsmanship with attention to detail.

Our team prioritizes clear communication, education, and customer satisfaction, ensuring every project is completed smoothly and built to last. Licensed, insured, and committed to excellence, we are more than a service provider—we’re a trusted partner helping homeowners enhance the beauty, comfort, and value of their homes.