Abstract: Disclosed herein is a process for constructing buildings for use as dwellings, or for social or industrial use, which utilize, either partially or completely, prefabricated units dimensioned to render them easily transportable, which can be joined together in such a way as to create one-storied and multi-storied structures of various known designs, that are bound stably to one another in order to create buildings that extend upwards in height over a considerable number of stories and have anti-seismic characteristics of a high standard.The said units are constituted by a U-shaped, three dimensional base unit and by a complementary, three dimensional, angle shaped unit, these being provided with vertical walls or pillars which, over their full height, have an open space utilized for vertically binding with concrete, the said units one to the other and to the foundations.