A modular home is a home construction that is built indoors in a factory-like setting. The finished products are covered and transported to their new locations, where they are assembled by a builder. These homes are often called factory-built, system-built or prefab (short for prefabricated) homes. A modular home is not a mobile home; it is simply a home that is built off-site, as opposed to on-site. The other main difference between modular and mobile homes is the foundation. A modular home …