Unity Avenue: An illustrative summary of Jane Jacobs' work

To generate exuberant diversity in a city’s streets and districts, four conditions are indispensable: 1. The district, and indeed as many of its internal parts as possible, must serve more than one primary function; preferably more than two. These must insure the presence of people who go outdoors on different schedules and are in the place for dif

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Author and activist Jane Jacobs argued that cities thrive when they mingle “everyday diversity of uses and users in its everyday streets.”

We are accustomed to thinking of streets, or neighborhoods of streets, as divided into functional uses—entertainment, offices, residence, shopping or the like. And so they are, but only to a degree if they maintain their success. For example, streets which become so profitable for such secondary diversity as clothing shopping that clothing shopping

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No neighborhood or district, no matter how well established, prestigious or well heeled, and no matter how intensely populated for one purpose, can flout the necessity for spreading people through time of day without frustrating its potential for generating diversity. Furthermore, a neighborhood or district perfectly calculated, it seems, to fill o

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In this group of chapters on decline and regeneration, I intend to dwell on several powerful forces that can influence, for good or for ill, the growth of diversity and vitality in cities, once an area is not crippled by lack of one or more of the four conditions necessary for generating diversity. These forces, in the form that they work for ill,

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This ubiquitous principle is the need of cities for a most intricate and close-grained diversity of uses that give each other constant mutual support, both economically and socially. The components of this diversity can differ enormously, but they must supplement each other in certain concrete ways. I think that unsuccessful city areas are areas wh

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This order created uncoordinated systems that worked, without staff, as if by magic. Such was Jacobs’s “Sidewalk Ballet.” With density, she argued, came “eyes on the street,” a community-based security system that required neither barbed wire nor an extensive police presence. With wide sidewalks comes trusted interactions, even with strangers—a qua... See more

If secondary diversity flourishes sufficiently and contains enough that is unusual or unique, it seemingly can and does become, in its accumulation, a primary use itself. People come specifically for it. This is what happens in good shopping districts or even, to a humble extent, on Hudson Street. I do not wish to minimize this occurrence; it is vi

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