We have a small 4-story condo going into a lot behind us now (and for the past 4 months). It's remarkabke how stop and go visible progress is, even though the there's people on the site 5 or 6 days a week.
Two weeks of earth moving. Then prep. Do the foundation in a week. Then prep. Framing in a week and a half. Now endless jobs of plumbing, electrical, windows, this and that, on and on for weeks.
For factory built homes to really be a win, then need a very high level of integration. An easy to snap together frame doesn't actually save much time or effort. But if there's really finished walls with utilities built-in (and also accessible for future maintenance) then I can see the effort being potentially useful.
Two weeks of earth moving. Then prep. Do the foundation in a week. Then prep. Framing in a week and a half. Now endless jobs of plumbing, electrical, windows, this and that, on and on for weeks.
For factory built homes to really be a win, then need a very high level of integration. An easy to snap together frame doesn't actually save much time or effort. But if there's really finished walls with utilities built-in (and also accessible for future maintenance) then I can see the effort being potentially useful.