Quintessentially a modernist and global housing type, the Taipei walkup apartments become the major type massively produced in Taipei from the 1960s to the 1970s. The production of the Taipei walkups is part of the housing modernization in Taiwan, and the localization process of the type represents the interaction and integration of the modernist ideals and the vernacular contexts. This essay explores the production of Taipei walkups by the public sector in the early years, i.e. the 1950s-1960s, and analyzes how the local conditions have helped shaping the spatial form. This essay first explains what early efforts by the public sector were in introducing this foreign type, and how the original modernist planning has been twisted both in concepts and in forms. Second, the essay investigates the provision of architectural drawings of walkup apartment buildings, and discusses the public sector’s intention on the already surfaced vernacular characteristics. Third, through the examples of early private developments of Taipei walkups, the critical contributions from the public sector are analyzed. The market interventions are viewed as part of the fuel for housing commodification, and the developments serve to demonstrate how the modern housing of walkup apartment buildings may look like. Both help the continuous production of the new type.