There is a middle ground too, prefab homes, where the walls, floors, etc, are all built off-site in a factory, and then shipped to your location in sections. It

There is a middle ground too, prefab homes, where the walls, floors, etc, are all built off-site in a factory, and then shipped to your location in sections. It allows for faster building (can go from foundation to roof on and siding up in 2 days) and in theory, much cheaper costs.. Currently, most roof trusses are already built this way, but all walls, flooring, etc, electrical, plumbing, etc, are all custom done on site, meaning much higher costs. However, the hi-end companies I was looking at when I last looked were much more focused on the speed, then the cost efficiencies.