Here’s an example of a low-cost and fast straw bale home. The author, in the comments, mentions how you can get all the walls up for a small structure or a tiny home in a day. Cob, another low-cost and sustainable method, would take days or weeks for the same size structure.
More about straw bale building.
And a longer video. Fast and really cheap where straw is available. This method, like earth bags, also reduces the amount of wood needed.
And one about building a yurt.
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