Since Germany was forbidden to manufacture aircraft until 1955, he turned his company to manufacturing prefabricated buildings, sewing machines, and small cars — most notably the Messerschmitt Kabinenroller.
Da Tyskland ikke måtte fremstille fly indtil 1955 ændrede han sit firma så det i stedet fremstillede præfabrikerede huse, symaskiner og små biler – mest bemærkelsesværdig var Messerschmitts kabinescooter.