The William Luelleman House (also known as the Gerhard Hehemann House) is a historic house in downtown New Bremen, Ohio, United States. Designed by an unknown architect and built in 1837, it is the oldest structure in the village, and it has been ranked as a leading example of German architecture on the American frontier. Among its leading details are the symmetry of the windows and doors of its facade, the glass transom windows above the doors, and the existence of a stoop rather than a porch at the entrance to the building.[2]