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The sod house or "soddy"  was an often used alternative to the log cabin during frontier settlement of the Great Plains of Canada and the United States. Primarily used at first for animal shelters, corrals and fences, if the prairie lacked standard building materials such as wood or stone, or the poverty of the settlers precluded purchasing standard building materials, sod from thickly-rooted prairie grass was abundant, free, and could be used for house construction.  Prairie grass has a much thicker, tougher root structure than a modern lawn. A type in Alaska is a barabara.
Construction of a sod house involved cutting patches of sod in rectangles, often 2'×1'×6" (60×30×15 cm), and piling them into walls. Builders employed a variety of roofing methods. Sod houses accommodated normal doors and windows. The resulting structure featured less expensive materials, and was quicker to build than a wood frame house. However, sod houses required frequent maintenance and were often vulnerable to rain damage, especially if the roof was also primarily of sod. Stucco was sometimes used to protect the outer walls. Canvas or stucco often lined the interior walls.
While the influence of the sod house cannot be overlooked, stone or timber was preferred when available. In addition, where railroads existed, framed houses and buildings were used extensively during the settlement period.
Sod houses that are individually notable and historic sites that include one or more sod houses or other sod structures include:
- Addison Sod House, a Canadian National Historic Landmark building, in Saskatchewan.
- L'Anse aux Meadows, the site of the pioneering 10th-11th century CE Norse settlement near the northern tip of Newfoundland, has reconstructions of eight sod houses in their original locations, used for various purposes when built by Norse settlers there a millennium ago.
- United States
- Cottonwood Ranch, Sheridan County, Kansas. The ranch site, listed in the National Register of Historic Places (NRHP), included a sod stable.
- Dowse Sod House, near Comstock, Nebraska; NRHP-listed and operated as museum.
- Heman Gibbs Farmstead, Falcon Heights, Minnesota; the NRHP-listed site includes a replica of the original 1849 sod house.
- Jackson-Einspahr Sod House, Holstein, Nebraska, NRHP-listed.
- Leffingwell Camp Site, Flaxman Island, Alaska, listed on the U.S. National Register of Historic Places (NRHP).
- Minor Sod House, McDonald, Kansas, NRHP-listed.
- Page Soddy, Harper County, Oklahoma, NRHP-listed.
- Pioneer Sod House, Wheat Ridge, Colorado, NRHP-listed.
- Gustav Rohrich Sod House, Bellwood, Nebraska, NRHP-listed.
- Sod House (Cleo Springs, Oklahoma), also known as Marshall McCully Sod House, NRHP-listed.
- Sod House Ranch, Burns, Oregon, (does not include a sod house).
- Wallace W. Waterman Sod House, Big Springs, Nebraska, NRHP-listed.
- Canadian Prairies
- Dugout (shelter)
- Earth structure
- Icelandic turf houses
- Rammed earth
- Sod roof
- Vernacular architecture
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- Two books by Solomon D. Butcher (1856–1927), Nebraska photographer of the homestead era, whose works include over 1,000 photos of sod houses: Pioneer History of Custer County and Short Sketches of Early Days in Nebraska (1901), and Sod Houses, or the Development of the Great American Plains (1904)
- Dick, Everett. The Sod-House Frontier, 1854-1890: A Social History of the Northern Plains from the Creation of Kansas and Nebraska to the Admission of the Dakotas. University of Nebraska.