Most cities around the world can be broken down into 27 typical patterns of development, according to the work of a researcher at UC Davis.

A close study of the street patterns in cities around the world has shown that most cities are comprised of a combination of 27 development categories—from the urban grid typical of downtown cores to superblocks, new urbanist neighborhoods and the "loops & lollipops" suburban style cul-de-sac development. Emily Badger reports in the The Washington Post’s Wonkblog on the work of University of California at Davis professor Stephen Wheeler, who combed over satellite imagery of multiple metropolitan areas around the world to produce striking maps showing the distribution of the varied development patterns.
What's interesting about these 27 categories that Wheeler has defined, covering the full range of development patterns in two dozen metropolitan regions he has studied worldwide, is that most of them are new. Relatively speaking.
"We have had an explosion of different types of built landscapes in the last century," says Wheeler, who is working on a book about these patterns.
Wheeler's work has shown that the most common type of development is primarily associated with suburbs and exurbs—the patterns of development commonly associated with the car. Wheeler believes his work will help people to understand the role that varied development patterns affect "how we travel, how much time we commute, whether we walk, how healthy we are as a result, how our communities affect the climate and how much pollution we generate."
FULL STORY: The 27 patterns that make up the world’s cities and suburbs

Trump Administration Could Effectively End Housing Voucher Program
Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?
As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

Paris Voters Approve More Car-Free Streets
Paris Mayor Anne Hidalgo says the city will develop a plan to close 500 streets to car traffic and add new bike and pedestrian infrastructure after a referendum on the proposal passed with 66 percent of the vote.

Making Mobility More Inclusive
A new study highlights the challenges people with disabilities continue to face in navigating urban spaces.

Texas Bills Could Push More People Into Homelessness
A proposal to speed up the eviction process and a bill that would accelerate enforcement of an existing camping ban could make the state’s homelessness crisis worse, advocates say.
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.
Heyer Gruel & Associates PA
Ada County Highway District
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service