On the Baltic Sea southern coast, bishoprics in the late 12th century began to establish with the help of military forces – monks-knights. Lands inhabited by the Balts and Finnish-Ugrian tribes came under the authority of Pope and Emperor of the Holy Roman Empire. The construction of cult buildings expanded with the spread of the Catholic Faith, developing church types and urban space in medieval towns of the State of the Teutonic Order and the Livonian Confederation. One of the most important cult building types was the citizen Catholic congregation’s church became the architectural dominate in Hanseatic League cities and changed urban aesthetics. Research object: citizen Catholic congregations’ churches. Research problem: it is necessary to study citizen Catholic congregations’ churches organized medieval town planning around the market in Hanseatic League cities to preserve historical identity during the development of the contemporary urban environment. Research goal: analysis the impact of citizen Catholic congregations’ churches on the urban space development in Hanseatic League cities. Research novelty: analysis of common and local features of citizen Catholic congregations’ churches planning and its evolution in Hanseatic League cities during the 12th–15th centuries. Research methods: studies of archive documents, projects, cartographic materials, published literature and inspection of churches in nature, photo fixation.