Hello, If you are interested in building with load bearing steel SIPs in California, please give us a call. We just started construction on a new 4,300 sf steel SIP Custom Home near Joshua Tree National Monument. This home is ZNE (Zero Net Energy) and exceeds the minimum standard of the 2016 California Energy code by 32%. The home has a Seismic Design Category "E" location (highest in CA). Despite its location the home is constructed exclusively out of steel SIPs and cold formed light gage steel. The home is located in Climate Zone 14 (harshest). Lastly, this challenging project is located in a high risk wild fire zone and comples with the 2016 California Fire Code, and Chapter 7A. If you would like to know more about building with steel SIPs in California, please contact us. www.360sustainable.com 415 515 8933