The idea of Passive House design is often confusing, particularly in North America, where a house is, well, a house. In Germany, where Passivhaus came from, Haus means building. …The building is actually a hybrid, a combination of wood and concrete. “The concrete on the top brings mass into the building, reduces the transmission of sound and dampens the vibrations. The connection details are designed so that they accommodate the different tolerances of the individual trades.” At the time it was built in 2013, it was the largest wooden office building in Europe, over 100,000 square feet. I do not know how we missed it, but we have shown other hybrid buildings by Kaufmann, including the CREE building and the world’s tallest timber tower in British Columbia.