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Creating “community” has long been a goal of urban planners. Although such rhetoric abounds in planning circles, what it all means is unclear. In this article, the authors review the community psychology and urban plan- ning literature, defining sense of community within the context of how the built environment might facilitate or impede it. They then present their research, which tests the effects of “main street” on sense of community in four San Francisco neighborhoods. Results indicate that respondents in neighborhoods exhibiting characteristics of a main street town (Bernal Heights and West Portal) have significantly higher sense of community than do respondents from a high-density neighborhood (Nob Hill) and from a more suburban-style city neighborhood (Sunset).

This article explores how indigenous migrants experience the sociopolitical and existential condition of “illegality” in the United States. Drawing on the experiences of Maya migrants from Yucat´an, Mexico, in the San Francisco Bay Area, I argue that the specter of state surveillance and the threat of law enforcement produce a particular politics of (im)mobility for indigenous migrants. This local politics of mobility takes form through spatial tactics of invisibility and visibility. Tracing migrants’ tactical maneuvers through public space, I show how their relations to space, place, and movement alter cultural sensibilities of tranquilidad (tranquility), and further instantiate “illegality” as a site of exclusion. This analysis of the experiential effects of anticipated surveillance provides a deeper understanding of the power of the state to enforce migrant “illegality” even in cities that promise official sanctuary.

The development of downtown public space has been increasingly defined by agreements negotiated between the public and private sectors. In the last decades the majority of downtown public space has occurred in the form of urban plazas, built as integral parts of privately owned office and retail complexes. In this paper we document the private production of public open space in the downtown areas of Los Angeles and San Francisco - two cities that have used distinctively different policy approaches in forming public-private partnerships. We examine how the process of public open space creation is affected by the culture of planning and development, and discuss similarities and differences in the imagery and form of plazas in the two cities. It is found that urban plazas are the reflection of a market-driven urbanism. As such they are quite homoge- neous in their form despite differences in the planning style and development process encountered in the two California cities.

This two-part essay analyses the changing nature of the public realm in the evolving edge of the American metropolis and the implications for urban design and planning. Many forces are changing the form and use of public space in cities--concerns for safety and liveability, increasing dependence on telecommunications, decline in public revenues, the privatization of many amenities, and an increasingly pluralist society. The essay specifically focuses on the historical influence of planning and design practices on suburban form: density levels, land use and zoning patterns, suburban layouts and streetscapes. Field surveys and morphological analyses of urban edge patterns from the San Francisco Bay area document the current state of the suburban public realm. The second part of the essay will examine how physical planning can contribute to restoring a more vibrant public realm amidst raging debates over its changing nature and relevance.

A growing literature examines the extent to which the criminal justice system perpetuates poverty and inequality. This research examines how anti-homeless laws produce various forms of police interactions that fall short of arrest, yet have wide-ranging impacts on the urban poor. Our analysis draws on a citywide survey of currently and recently homeless people, along with 43 in-depth interviews, to examine and reveal the mechanisms through which consistent punitive interactions, including move-along orders, citations, and destruction of property, systematically limit homeless people’s access to services, housing, and jobs, while damaging their health, safety, and well-being. Our findings also suggest that anti-homeless laws and enforcement fail to reduce urban disorder, but create instead a spatial churn in which homeless people circulate between neighborhoods and police jurisdictions rather than leaving public space. We argue that these laws and their enforcement, which affected the majority of study participants, constitute a larger process of pervasive penality—consistent punitive interactions with state officials that rarely result in arrest, but that do material and psychological harm. This process not only reproduces homelessness, but also deepens racial, gender, and health inequalities among the urban poor.

The development and proliferation of mobile social networks have the potential to transform ways that people come together and interact in public space.These services allow new kinds of information to flow into public spaces and, as such, can rearrange social and spatial practices. Dodgeball is used as a case study of mobile social networks. Based on a year-long qualitative field study, this article explores how Dodgeball was used to facilitate social congregation in public spaces and begins to expand our understanding of traditional notions of space and social interaction. Drawing on the concept of parochial space, this article examines how ideas of mobile communication and public space are negotiated in the everyday practice and use of mobile social networks.

There are numerous ways in which people make illegal or unauthorized alterations to urban space. This study identifies and analyzes one that has been largely ignored in social science: explicitly functional and civic-minded informal contributions that I call “do-it-yourself urban design.” The research, which began as an investigation into more “traditional” nonpermissable alterations, uncovered these cases—from homemade bike lanes and street signs to guerrilla gardens and development proposals—that are gaining visibility in many cities, yet are poorly accounted for by existing perspectives in the literature. This article examines the existing theories and evidence from interviews and other fieldwork in 14 cities in order to develop the new analytical category of DIY urban design. I present findings on the creators of these interventions, on their motivations to “improve” the built environment where they perceive government and other development actors to be failing, and on the concentration of their efforts in gentrifying areas. This introduces the possibility of conflict and complicates their impact. I argue that DIY urban design has wide-ranging implications for both local communities and broader urban policy.

The social integration of a city depends on the extent to which people from different neighborhoods have the opportunity to interact with one another, but most prior work has not developed formal ways of conceptualizing and measuring this kind of connectedness. In this article, we develop original, network-based measures of what we call “structural connectedness” based on the everyday travel of people across neighborhoods. Our principal index captures the extent to which residents in each neighborhood of a city travel to all other neighborhoods in equal proportion. Our secondary index captures the extent to which travels within a city are concentrated in a handful of receiving neighborhoods. We illustrate the value of our indices for the 50 largest American cities based on hundreds of millions of geotagged tweets over 18 months. We uncover important features of major American cities, including the extent to which their connectedness depends on a few neighborhood hubs, and the fact that in several cities, contact between some neighborhoods is all but nonexistent. We also show that cities with greater population densities, more cosmopolitanism, and less racial segregation have higher levels of structural connectedness. Our indices can be applied to data at any spatial scale, and our measures pave the way for more powerful and precise analyses of structural connectedness and its effects across a broad array of social phenomena.

In this article I explore how an integrated approach to the anthropological study of urban space would work ethnographically. I discuss four areas of spatial/cultural analysis—historical emergence, sociopolitical and economic structuring, patterns of social use, and experiential meanings—as a means of working out of the methodological implications of broader social construction theoretical perspectives. Two plazas in San Jose, Costa Rica, furnish ethnographic illustrations of the social mediating processes of spatial practices, symbolic meaning, and social control that provide insight into the conflicts that arise as different groups and sociopolitical forces struggle to claim and define these culturally significant public spaces.

This article illustrates how spatial/cultural representations come into being with data collected during a 7-month ethnographic study of two plazas, the Parque Central and the Plaza de la Culture in San José, the capital city of Costa Rica. The comparison of their history, physical and spatial symbolism, user activities and daily behaviors, and news reports and commentaries demonstrates how these cultural representations reflect meanings that change in response to the material conditions and social values of the historical period. Further, the analysis uncovers that moral contradictions in those meanings are expressed first in the traditional plaza setting, and then, are transformed into contradictions across both plazas.

Over the last 30 years, social theorists have increasingly emphasized the importance of space. However, in empirical research, the dialectical relationship between social interaction and the physical environment is still a largely neglected issue. Using the theory of structuration, I provide a concrete example of why and how space matters in the cultural analysis of an urban social world. I argue that bike messengers—individuals who deliver time-sensitive materials in downtown cores of major cities—cannot be understood outside an analysis of space. Specifically, I connect the cultural significance of messenger practices to the emplacement of those practices inside the urban environment.

Ordinary kriging, a spatial interpolation technique, is commonly used in social sciences to estimate neighborhood attributes such as physical disorder. Universal kriging, developed and used in physical sciences, extends ordinary kriging by supplementing the spatial model with additional covariates. We measured physical disorder on 1,826 sampled block faces across four U.S. cities (New York, Philadelphia, Detroit, and San Jose) using Google Street View imagery. We then compared leave-one-out cross-validation accuracy between universal and ordinary kriging and used random subsamples of our observed data to explore whether universal kriging could provide equal measurement accuracy with less spatially dense samples. Universal kriging did not always improve accuracy. However, a measure of housing vacancy did improve estimation accuracy in Philadelphia and Detroit (7.9 percent and 6.8 percent lower root mean square error, respectively) and allowed for equivalent estimation accuracy with half the sampled points in Philadelphia. Universal kriging may improve neighborhood measurement.

This article discusses successful common grounds for children public settings that enable the harmonious intermingling of children of different backgrounds, races, and ethnicities and that encourage their social interchange, play, educational development, and collaboration. Our study focused on three types of public space that tend to bring these children together: the public school, the park, and the neighborhood community center. The research employed a variety of methods to study the interaction of children 9 to 12 years of age. Field work took place at four sites in West Los Angeles, Santa Monica, and the San Fernando Valley that enjoy a high level of intermixing and have a reputation for promoting diversity. Subjects in the research included children, teachers, and administrators. The article highlights the findings of the field work and concludes with a comparative analysis of the different settings and a discussion of the environmental and programmatic attributes that contribute to their success.

Bogota’s public space policy is often credited with promoting inclusionary principles. In this article, I explore critically the content of Bogota’s articulation of equality in public space policy. In so doing, I present a critical view of the work Bogota’s insistence on equality does to mediate class relations in the city, relying on deeply held conceptions of both social extremes. This results in the construction of a version of social harmony in public space that at once depoliticizes the claims to public space of subjects such as street vendors and the homeless and claims a new role for the middle class in the city. The analysis focuses on two examples of community governance schemes, documenting the logics and methods used by communities to implement official visions of equality and justify the exclusion of street vendors and homeless people from the area. By looking at the articulation of these exclusions in local class politics through seemingly inclusionary rhetoric, the article accounts for ‘post-revanchist’ turns in contemporary urban policy, while anchoring its production in local processes of community governance.