BB Centrum in Prague 4 still had a leftover from the communist era among the modern office and residential buildings: four unsightly prefabricated buildings (built in the nineteen seventies as dorms for the construction workers building the Jižní město housing estate). Two of them (which were used in recent years as category C offices buildings) were the first in Prague to be torn down in ten days, and next year a new block of flats will be going up in its place with 172 flats for short-term and long-term rental. Thus PASSERINVEST GROUP, the developer of the project, will be expanding its offer of residential housing, thereby reacting to the current market demand.