The starting point of this article is the critique on socioeconomic and environmental implications of conventional construction practices around sustainability. The focus is on exploring the sustainability dynamics of the emerging “Design Global, Manufacture Local” (DGML) configuration with emphasis on building construction. Combined with the concept of conviviality which we identify in aspects of vernacular architecture we explore how it can foster meaningful sustainability practices in the construction sector. We introduce a framework of “open construction systems”, an expression of DGML in building construction, as a way to foster the conjunctive use of the digital commons and local manufacturing technologies for the construction of buildings through three interlocked elements—modularity, sharing and adaptability. We suggest that the “open construction systems” framework may point towards more sustainability in building construction.