MDC Contracting, LLC has rebranded to Manthei Construction. As a family owned and operated business, we have over 30 years experience in construction grading projects ranging in size from $10,000 to $4,000,000. Whatever the requirements of your specific project may be, we have the knowledge, experience and resources to complete the work on time and within your budget. Services include site development, underground systems, ready-mix concrete, aggregate processing, and manufacturing and supply for landscape products. Many developers have learned to lean on our extensive background and knowledge in solving challenging site problems. We have completed many commercial projects, including multiple grocery and department stores, as well as numerous subdivisions, condominium projects, restaurants, medical offices and professional buildings.