A 2018 law required Airbnb to share the names and addresses of hosts in the New York City. A judge ruled that the mandate violates the 4th Amendment.

"A Manhattan Federal judge ruled [earlier this month] that Airbnb does not have to turn over data on its hosts to New York City authorities," reports Stephen Rex Brown.
"Judge Paul Engelmayer wrote that a new law requiring Airbnb to turn over hosts’ information starting Feb. 2 should not go into effect because it potentially violates the Fourth Amendment protecting against unlawful search or seizure," adds Brown.
The city of New York and Mayor Bill de Blasio approved the law in 2018, hoping to cut down on illegal hotel operators, after years of consideration and multiple studies finding that short-term rentals make the rental market more expensive in the city. The article made not mention of whether the ruling could potentially have precedent on similar laws approved in other cities.
FULL STORY: Judge blocks New York City from obtaining Airbnb user data

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Urban Design for Planners 1: Software Tools
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.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Albany
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research