Built off-site using only sustainable materials, the 3Box92 House is a vertical extension of a 19th-century building. The home sits on a street in the Boulogne Billancourt district of Paris. Its black limewash facade and modern cubic form is a stark contrast to the existing architecture. Inside, the geometric theme continues where stacked boxes form the internal layout. The staggered pattern creates a series of terraces and cantilevers on the rear elevation. This south end consists of a garden and pool backed by an opposing white limewash. Utilizing prefabricated systems, the entire project was constructed with only natural, recyclable items, and responsibly harvested wood. Also be sure to check other black house.