The article is descriptive and was conducted in the Province of West Sumatra, where ganggam bauntuak exists. The result of research indicated that first, the mechanism for implementing of the conversion of ganggam bauntuak land right is carried out in accordance with Regulation of the Ministry of Agriculture and Agrarian Affairs (PMPA) No 2 of 1962. Second, the major contributing factor to cases of deviation in which ganggam bauntuak right is converted into right of ownership is the existence and nature of ganggam bauntuak right itself, which in an adat right of ownership and not only right of use. Third, the kind of right that is appropriate for ganggam bauntuak land, as perceived by the community, is right ownership, not right of use: this right covers particularly land for housing development, but it can also include agricultural land and the abligation of ganggam bauntuak land-holders when exercising their right to put in a request for conversion is generally payment of cost incurred in writing of a little-deed.