Natural Building Resources

Green Building

Sustainable Sources (Texas)was founded in 1994 by Bill Christensen as a means to spread information about green building and related fields in an efficient, inexpensive way over the then-new world wide web.

Clay, Straw, Timber

EcoNest (Oregon) the name we have given to our holistically designed and hand-crafted natural homes.


Cob Cottage Company Cob research and workshops.

Compressed Stabilized Earth Block

Auroville Earth Institute (India) For 25 years, the Auroville Earth Institute has educated and empowered people to build their own dwellings using earthen techniques.


Earthwood Building School (New York) Earthwood is an off-the-grid 5-acre campus with a dozen cordwood masonry outbuildings, including four guesthouses, a library/bookstore, sauna, and mess hall.

Cordwood Construction Workshop and publication information on all things cordwood.

Dry Stone Masonry

Drystone Conservancy (Kentucky) preserving dry-laid stone structures and promoting the ancient craft of dry stone masonry.

Earth Block

Watershed Materials (California) technology to produce beautiful, sustainable masonry with less cement using recycled materials.


Cal-Earth Institute (California) sustainable earth architecture through building and testing life-size prototypes, and by educating the public in environmental arts, architecture, and awareness.


Earthship Biotecture (New Mexico)Radically Sustainable Buildings.

Rammed Earth

Rammed Earth Solar Homes Inc. (Arizona) Rammed earth research and workshops.

SIREWALL (British Columbia) Insulated rammed earth research institute and courses.

Round Timber

WholeTrees Architecture (Wisconsin) Round timber structural supplies and round timber research and design.

EcoSpirit Studio (Wisconsin) Traditional, round timber framing, strawbale, design/build and workshops.


Design Coalition (Wisconsin) Straw-clay to adaptive reuse to passive house and everything in between. The straw-clay section has helpful research values and case studies.


The Last Straw (Colorado) The international Journal of Strawbale and Natural Building. (Oregon) If you are brand new to straw bale or are a straw bale construction specialist there’s something for you at

Building with Chemistry  A building tool providing information about green building codes and standards, materials selection, and the role of chemistry in developing sustainable building materials.




Reclamation Administration: News and Research on Building Material Waste Prevention