Abstract: A method of construction. A first step involves stabilizing prefabricated load bearing walls for an underlying vertical level of a multi-story building. The walls have opposed surfaces and a top peripheral edge. A second step involves securing floor joists for an overlying vertical level to at least one of the opposed surfaces of the walls of one of the underlying vertical level. A third step involves installing prefabricated load bearing walls for the overlying vertical level along the top peripheral edge of the underlying vertical level. The walls have opposed surfaces and a top peripheral edge. The steps set forth above are repeated until a desired number of vertical levels are installed.