To the home of Michael G. Holder, Inc Please feel free to look around and see what we have to offer you. Michael G. Holder, Inc is a company built on delivering quality projects with experience, knowledge and professionalism. At MHG Inc., we provide our experience and knowledge to aid in the design and construction of community hardscaping, landscaping and amenity centers for developers and home builders. Founded in 1989 Michael G. Holder, Inc has a successful track record of delivering top quality projects, on time and on budget. We are poised to expand our business and capitalize on our continued relationships and our reputation as one of the premier hardscape and amenities companies in the Southeastern United States.