Looking specifically at New York City as a case study of a global city in which the creation, affordability, and diversity of new housing is key to its long-term prosperity, the proposed architecture is a strategy born from an investigation of the DNA of the city fabric instead of being an applied model. Unlike existing proposals for multiple new satellite centers scattered across all of New York’s five boroughs, Infrastructural Infill discovers unused and over-looked space in the heart of Manhattan that can match the largest of these satellite projects, while also providing new affordable forms of housing, working, and transportation.