Guthmann Construction LLC, a Residential & Commercial Design/Build Construction Company, has served the greater Charlotte area with an Unlimited License from North Carolina for more than 25 years. GCLLC has produced projects ranging in size and scope from a small bathroom up-fit to Award Winning whole house renovations. We are also the perfect choice as your “High-Efficiency” Custom Home Builder or Commercial Contractor. In 2006, Guthmann Construction partnered with Tony L. Gray, of GrayDesign Architecture, PA., to offer homeowners the valuable benefit of our Design/ Build team seamlessly working together to ensure that your project is coordinated with excellent care and quality from start to finish. Our Guthmann – Gray Design/Build collaboration enables singular and total responsibility of design and production coordination.