In the article “The Building Ritual System of Gagauz People (On the Formulation of the Question)”, building rituals are considered in relation to the stages of the construction of housing and getting used to it. These include rituals performed prior to housing construction, rituals accompanying the construction, and rituals performed upon moving to a new house. An attempt was made to reveal the semantics of building rituals and to highlight the role of housing in the Gagauz perception of the world. Gagauz tradition has it that all the stages of house construction and the process of inhabiting it are accompanied by rituals, among which the most important are the rituals associated with the idea of the world tree and with the sacrifice for the building. According to popular belief, the performed rituals ensured the security and prosperity to its residents.