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ah, so the main cost seems to be the human-part that's hard to automatize, not really the structure/framing etc..?

My uncle runs a framing business. His team can frame your standard residential house in 3 days.

The tile guys take 3 days to tile a bathroom. The cost isn't in the skeleton, but all the things that go on it or through it

thanks Malfist,

and I guess the cost is the wiring and plumbing?

Yes. The good news, if you're trying to develop tech to solve the housing cost problem, is that there are several labor-intensive processes that are easier to develop automation for than building the structure of the house. Like, a robot to wire up light switches is much cheaper to develop and test than a robot to print entire structures.

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