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The size of that house in the pictures a good framing crew could frame that house in about 2 days. Framing is one the fastest parts in construction. Finishing is where all the other time is spent. Even a small crew would not take too long to frame a house that size.

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So it really doesn't buy that much? Maybe in cost?

Concrete is pretty cheap. Lumber for framing is cheap. However, sheathing is not super cheap, but not that expensive. Siding though is not cheap even vinyl which I am not a fan of is not exactly cheap either. So not needing sheathing or siding for the exterior of the wall probably make it cheaper. So it probably would be somewhat cheaper than a conventionally framed wall. I don't know how much, but where I live 1 cubic yard of concrete is $145 dollars.

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