The article deals with the concept of a home in traditional culture. It is argued that in the mythopoetic tradition, universal principles of creating a house were formed. This deserves attention today, because the main thesis in the concept of a home was the idea of the ontological dimension of everyday life, of the close connection of the spiritual and the material, of the connection of philosophical ideas and everyday actions. In traditional culture, everyday life was associated with the origins of being, was the sphere of application of creative forces. The object of research is the practice of building peasant houses in the medieval period, as well as in the XVIII-XIX centuries, their architecture and interior, their relationship with the surrounding landscape. The author uses general historical, semiotic and hermeneutical methods of research. The article systematizes the architectural principles of building a traditional home, which made the peasant house a prototype of the cosmos, a model of the universe. The author analyzes such structural elements of the mythological picture of the world as the tree of life, the world axis, the cross, the sacrifice, and their application in architecture. The author considers the ideas about the heterogeneity of space in the mythological culture and how they were used in the construction of the house; the function of doors, windows, gates in the symbolic structure of the house is investigated. The conclusion is made about the trinity of information, energy and matter in traditional culture.