Local wisdom producing genius loci is a conceptual idea that lives, grows and develops in the society. It develops continually and in relation with society awareness, organizing sacral and profane parts of their lives. Genius loci in traditional settlements can be found in the different pattern and order corresponding to traditional values of the place. This article will examine „genius loci‟ of Nias Island traditional houses focusing on North Nias and South Nias regions specifically in Bawomataluo Village. This research uses ethnographic approach to reveal informations on genius loci as identity and reflection from valuable experiences in such construction that can be utilized as sustainable development concept that can survive time and eventual context with its contained traditional and vernacular meanings.