The most frequently preferred solution for the ownership structure of land for single-family housing in Poland is the structure of one cadastral plot – one single-family building. However, changing architectural concepts allow for the creation of single-family housing estates in systems consisting of atrial houses or T-type buildings, which have much more advantages than traditional terraced or semi-detached buildings. These advantages result from a different solution of building forms, which can be combined not only in rows, but also in variously shaped groups consisting of many houses. This provides greater possibilities for the free shaping of development plans for groups of houses, which in turn can be combined in various spatial arrangements while maintaining the required conditions of individual entrance, proper lighting of rooms and mutual distances. At the same time, it allows for more intensive use of the area. Despite the indicated advantages, in the light of the observed implementation practice, it seems problematic to locate buildings with separate ownership, used individually on a plot of land used jointly. The article analyzes the possibilities of legal solutions in the area of land and buildings that can be applied in such a solution. The strengths and weaknesses of each solution were assessed and their opportunities and threats were indicated. For the purposes of this research, four differently shaped groups of buildings consisting of T houses were selected. The results were presented in a SWOT analysis for the development variants adopted for the research using the T house as a repeatable residential unit. The article proposes four legal and neighborly solutions that enable and promote the construction of housing estates using highly intensive atrial development based on the T-house.