TreeHugger writes the following about Sander Architects’ Hybrid House:

Portal frame structures are very cheap and good for enclosing large volumes efficiently, so Sander is able to build for $150 per square foot. Sander trademarks phrases like part prefab, all custom™ and says that “Prefab also has the added benefit of being eco-friendly, as off-site fabrication reduces waste energy in fabrication. A large part of our practice is devoted to implementing and researching green materials and environmentally-friendly design.”