The most effective measure of gentrification will not be a magic bullet, but rather a constellation of variables aimed at addressing its processual and multi-dimensional character.
Bearded, plaid-draped hipsters slink into newly established artisanal coffee roasters, pop-up art galleries, and barbershop-bars in a neighborhood once dotted with vacant storefronts. To the casual observer, this overwrought caricature smacks of gentrification. But, gentrification is a bit like obscenity: blatantly obvious once observed, far more difficult to systematically define and measure.
The definition of gentrification—like any good concept in sociology—remains contested. To varying extents, many definitions suggest that gentrification is a process whereby an influx of new residents, accompanied by the service providers they attract and demand, replace and displace longstanding residents, businesses, and social institutions. The result of this process is the changing demographic profile of neighborhood residents along dimensions of wealth, race, and educational status, increasing property values (with corresponding increases in rents), and changes to the neighborhood business environment. Defined thusly, gentrification appears to be a complex process that requires not only a consideration of the shifting demographic profile within a neighborhood but also changes in local economic and built environments.
FULL STORY: Following Fido: Considering Other Measures of Gentrification

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Planetizen Federal Action Tracker
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This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
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City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions