Shell Building Systems

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About Shell Building Systems

We are the largest SIP (Structural Insulated Panel) company in the western U.S. We have built over 5,000 projects, from single family homes to commercial buildings, apartments, schools, and projects up to four (4) stories in height.

Our SIPs are approved in all cities. We provide technical assistance, engineering, and general contracting and construction management services throughout California and the west.


Sebastopol, CA 95472

Question and answer

Q. Describe a recent project you are fond of. How long did it take?

A. We are the only SIP company that has built a major School (Manch School) that was 'green' - 2009, Las Vegas, Nevada

Q. What questions should customers think through before talking to professionals about their project?

A. We have over 40+ years of manufacturing experience and we have built High End Custom Homes in California, Hawaii, Russia and Mexico. We are highly experienced and we built over 5,000 homes for the World Bank in Russia (1995), the only SIP company with that experience.

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