This first volume in the series of Streetscape Territories notebooks has multiple purposes. On one hand, this publication seeks to introduce a theoretical discourse on Depth Configurations in architecture and urban design, as the built environment we inhabit can be understood as a territorial organisation of space, defined by different models of proximity and permeability. One of the main aspects of this discourse is the way in which territorial boundaries are defined in architecture and landscape design. This theory, focusing on the in-between scale and related to urban projects, considers the design and appropriation of collective space as its Leitmotiv: the way individual or collective use of space is demarcated or suggested may intimate its actual qualities. On the other hand, the notebook seeks to prove the relevance of this theoretical framework by presenting case studies of New York City as a part of the Streetscape Territories Research Project conducted at the LUCA/KULeuven University, campus Sint Lucas in Brussels and Ghent. The project is supported by a series of Masters Dissertation Projects developed within the theoretical framework of Depth Configurations and focused on the changing neighborhood of Williamsburg, Brooklyn in New York City. Finally, this notebook is presented in conjunction with an academic roundtable discussion in New York and seeks to stimulate a broad but critical reflection on the future role and nature of urban projects in a rapidly changing environment. More, it hopes to avoid architectural prejudices about the way people produce, transform, or inhabit space and to consider its multiple physical, social, cultural, economical, and environmental dimensions.