Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?

Load-bearing structure (foundation, walls, roof)

The frame that carries the house: what stands on the ground, what holds up the floors and the roof, and what the walls are made of. Everything else is fixed to it, so it is chosen first and changed last. The options differ in material, in how much of the work is skilled, and in how long each is expected to last.

Solutions