Since the Stone Age, the Mari Volga region, occupying the south of the Vetluga – Vyatka interfluve and adjacent areas of the Volga right bank to the east of the mouth of the Sura River, attracted the population of various archaeological cultures. Having appeared on the territory of the Mari Volga region in the IV millennium BC, the Volosovo population existed in the territory under consideration until the middle of the II millennium BC. During this long period of residence on the territory of the Mari Volga region, the population of the Volosovo culture not only preserved traditions in the organization of the settlements, construction of residential structures, but also as a result of contacts with other tribes, brought certain innovations to house-building. Active archaeological research of the Volosovo sites on the territory of the Mari Volga region allows the author to analyze house-building techniques. The author examines the traditions and innovations of the organization of living space among the Volosovo population of the Mari Volga region at the end of the III – first quarter of the II millennium BC.