Sander Architect's Hybrid House is more philosophy than product. Coming to CA Boom 4 with what they call "part prefab, all custom™", Sander Architects designs custom homes using prefab techniques and products. Every Hybrid House comes with a prefab structural steel frame; some incorporate prefab wall and roof panels.
Catherine Hollis, wife of principal Whitney Sander, told me that Sander Architects thinks of architecture "as an artform." They use prefab elements to extend clients' budgets, but they see a rigid 100% prefab approach as limiting. Installation of finishes and fixtures takes place on site using traditional construction methods, and therefore with the traditional construction timeline.
Sander Architects has five Hybrid House homes under construction, ranging in size from 3,000 sf to a monstrous 8,000 sf home. Proving the benefits of their "part prefab, all custom" process, a 3,000sf home being built in Culver City, CA should come in at about $150/sf, much lower than some of the 100% prefab outfits at CA Boom.
price: from $150/sf
how: prefab steel frame, some other prefab elements
timeline: similar to site-built