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Cal-Earth is a 501(c)3 non-profit/charitable foundation dedicated to research and education of the public in environmentally oriented arts and architecture. Its philosophy is based on the equilibrium of the natural elements of earth, water, air, and fire, and their unity at the service of the arts and humanity.

Cal-Earth’s research and educational work is founded by architect Nader Khalili (1936-2008) and continues his vision by teaching the Ceramics and Superadobe technologies and its useful application in the world. It continues to research the Earth Architecture principles and their tangible application in the spirit of Khalili’s philosophy and teachings.

Your contribution to Cal-Earth helps to support research and development, building projects, and helps to provide scholarships to workshop participants and apprentices.

Cal-Earth is a self-supported institute with no outside sponsorship. All research, education, and building is funded by donations, workshops, and product sales.

If you are interested in making a non-monetary donation to the institute, please contact Cal-Earth at:
760-956-7533 or by email.

Donate online:

To make an online donation, please click the "Donate" button:

Donate by mail:

P.O. Box 1977
Claremont, CA 91711

For more information, please contact us.

Building a Superadobe Structure Superadobe bags Interior - Superadobe bags
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Cal-Earth Inc. / Geltaftan Foundation | Hesperia, California

Superadobe technology was designed and developed by architect Nader Khalili and Cal-Earth Institute, and engineered by P.J. Vittore. Superadobe is a patented system (U.S. patent #5,934,027) freely put at the service of humanity and the environment. Licensing is required for commercial use.

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