There are but those companies often go out of business quickly because American manufactured home installers suck. In the US manufactured homes are sold by the

There are but those companies often go out of business quickly because American manufactured home installers suck. In the US manufactured homes are sold by the installer. They do a bank contract with a customer. The escrow process releases funds to either the installer or the actual factory. The factories can definitely produce sections with multiple stories, etc.. but then the installer is then responsible to have crane support and expertise in more complex "marriage lines" than the typical "double or triple wide" single story home. Once you get into this territory, at least in the US, it makes more economical sense to have a builder create a 2/3 story home.