My parents’ home, built in the 1950s was built from pre-fabricated components. From what my dad says (his mother was the original owner of the home), the fit of walls was very poor and they had to do a lot of patching to fill in gaps between the walls and the ceilings. There have been numerous attempts at prefabricated building but all have failed to gain any traction.
A lot of homes in New Zealand were sent over 150 years ago from Australia and Europe as prefabricated kits. Apart from the abysmal lack of insulation, they are still going strong.
Right now most new houses have the wood framing CNC manufactured based on plans, shipped to the building site and assembled, then modified as needed by the builder.
Our roofs are almost exclusively steel, which are also CNC cut and shipped to the site and installed by roofers.
Some Quadrant homes in Washington are built this way. The framing is done in a factory on a gantry and the walls are trucked out and assembled on site. There are subdivisions of thousands of houses built this way.
