The subject of the essay is part of the architectural research that took shape in Milan in the post-WWII period. Luigi Moretti founded his own construction company (Cofimprese) in Milan after WWII. Among the initiatives of Moretti and Cofimprese the program of the case albergo, collective homes intended for singles or young couples based on the typological combination of the private housing units with collective services, stands out. According to Moretti, this type of building represented “the most technically and socially advanced buildings” in the post-war scenario marked by an exceptional housing demand. Initial studies referred to a program of 22 case albergo, but only three of them were actually built. The basic scheme involved the combination of a group of buildings (from two to four buildings) and their collective services. Typological characters supported rationalized construction processes thanks to modular and repeatable solutions.