Cal-Earth Institute
Hesperia, California
The Cal-Earth Institute offers week-long retreats on superadobe (sandbags filled with earth and stacked in coils) and ceramic techniques developed by architect Nader Khalili. (760) 244-0614
Earthwood Building School
West Chazy, New York
One- to five-day workshops on cordwood masonry (short log-ends laid widthwise within a mortar matrix), earth-sheltered housing, and stone circles. (518) 493-7744
Fox Maple School of Traditional Building
West Brownfield, Maine
Explore joined timber frame, thatch, straw/clay, wood chip/clay, wattle and daub, cob, straw bales, and earth plasters with the Fox Maple school. (207) 935-3720
International Institute for Bau-Biologie and Ecology
Clearwater, Florida
Workshops and home-study courses explore “building biology:” nontoxic materials, energy conservation, indoor air quality, and electromagnetic radiation. (727) 461-4371
Southwest Solar Adobe School
Bosque, New Mexico
In weekend courses at the Southwest Solar Adobe School, learn to build with adobe, pressed block, and rammed earth, from site preparation to passive solar design. (505) 861-1255
Yestermorrow Design/Build School
Warren, Vermont
More than 100 courses are offered at Yestermorrow, including timber framing, furniture making, salvage, feng shui, woodworking, cohousing, and landscape and solar design. (888) 496-5541