This stately, multi-level residence consists of a three-dimensional structural steel skeleton with engineered wood infill. Instead of the more conventional system of wood shear walls with occasional steel moment frames, this house relies on a space frame of steel. The regular steel bays with wood infill allow for much more reliable connection between the many different volumes and floor and roof levels of the home, resulting in a strong level of seismic resistance. The system also allows for relatively fast construction, large open spans, and exceptional design flexibility.