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
Jennifer Siegal's Office of Mobile Design (OMD) comes to CA Boom with three distinct home lines.
The Portable House is a line of homes that can best be described as stylish, updated mobile homes. They are built in the factory and shipped complete (with wheels) to your site. Most models betray that fact, with fairly simple linear or stacked forms as a result.
The flexibility of the Swellhouse line lends itself to a more varied product. SIPs clad a "signature" S-shaped framing system. The Ecology Sun System (ECOSS) glass panels afford large expanses of uninterrupted glass. Like the portable house, swell houses are custom designed and no standard models are offered.
In the Take Home, OMD offers four standard configurations: 1, 2, 3, and 4 bedroom versions. The 1 bedroom is a single 14' x 60' linear module, with a roof sloping in toward the center. The 2,880 sf 4 bedroom is basically double width and double height, coming to 24' x 60'. All models cost about $240/sf and are shipped complete to your site.
One gripe: good luck finding the above information on their website. It's all done in Flash -- with no HTML version and it barely works. Sometimes a click leads somewhere, sometimes not. Details are nearly impossible to find, e.g. 36 lines of text that must be viewed 6 lines at a time.
price: $200,000 - $691,200
size: 840sf - 2,880sf for the standard models
br: 1 - 4 bedrooms
how: complete modules or SIP
The sprawling prefab prototype that Marmol Radziner built in the California desert shows the design potential of modernist prefab. It is the sexy rock star of the modernist prefab movement and has been getting its share of attention.
That prototype provided the basis for the five models they offer on their website. A simple 1 bedroom, 660 sf model costs $212k, while a 2,650 sf model with 3 bedrooms runs $781k. All models feature floor-to-ceiling windows, a tube steel structure, SIP walls, flat roofs, and wood or metal siding.
Houses are constructed at Marmol Radziner's factory in Vernon, California. Work completed at the factory includes electrical and mechanical systems, cabinets, and all finishes. Standard amenities include Sub-Zero and Bosch appliances, Hansgrohe and Kohler plumbing fixtures, teak or walnut cabinets, and CaesarStone countertops. One would be hard-pressed to find higher quality fixtures in a prefab house.
The models boast several green features: solar panels, tankless water heaters, ample overhangs on windows, and a recycled steel structure. Check out their website to see a full list of amenities and visit their configurator to see how different options affect the price.
The expanses of glass in the desert prototype show that these models do well in open spaces. However, the long list of custom prefabs that are currently in process shows that Marmol Radziner is up for tackling any site.
price: $212,000 - $781,000
size: 660sf - 2,650sf for the standard models
br: 1 - 3 bedrooms
how: complete modules delivered to site