Prefab or prefabricated is an umbrella term for off-site construction that refers to building a structure or a home in a factory before it’s assembled and installed on-site. Modular construction is just one category of prefabricated homes. Other non-modular, prefabricated construction includes light gauge steel, flat pack, and steel frame.
With prefab homes, the prefabricated panels and modules are constructed in a controlled, factory-like environment. These parts are then transported, assembled, and installed on-site to create a complete, livable home. The types of prefab homes include modular homes, panelized homes, and pre-cut homes.