The Durant-Dort Carriage Company Office is a historic office building located at 316 West Water Street in Flint, Michigan. This office building was the focal point of William C. Durant's efforts in building first carriages and then automobiles, and is the only extant building closely associated with Durant. It was here that pivotal decisions were made in the development and financing of the Buick Motor Company, the beginning of Chevrolet, and Durant's founding of General Motors. The Durant-Dort Carriage Company Office was declared a National Historic Landmark in 1978.