How could groups of standard and mass-produced houses be designed, so that, students could be united in groups and at the same time, be fully integrated into city life? Perhaps if the houses were growing, like parasites, in the common - public spaces of Volos, such a situation could arise. In this diploma, an effort is made to design constructions that turn the student residences into an integral part of the public spaces that already exist in the city. Attempts are therefore being made to "graft" the common ground of the city with the aim of both improving its characteristics and producing quality housing for students. In the first phase, a series of experiments are performed using a sketch, where the parasites colonize various possible sites. This is where all three typologies, that were finally resolved, emerge. The surface, the line and the point - tower. Then there is a more detailed analysis of the characteristics of some of the public spaces that seem to be interesting the most, as well as the creation of a map of the city where the common ground of the city is divided into white (active and accessible by all) and black (inactive, abandoned, closed). In the final stage, the analysis of the characteristics of each of the three public spaces that are selected, now lead to dimensioned proposals. The axonometric drawings and sections illustrate a situation in which brutalist buildings step on the common ground of the city, just in order to multiply it upwards. So, student residences are depicted as an integral part of constructions, that are aimed to be a unified body with the public place they colonize.