Arizona

Cattle graze on farmland in the Hualapai Valley north of Kingman, Arizona.

Arizona Tightens Groundwater Restrictions to Rein in Agribusinesses

The state is creating an ‘active management area’ in the western part of the state, where agribusinesses including a Saudi alfalfa exporter have practically free rein over water supplies.

January 16, 2026 - The Independent

Green "welcome" sign leaning on wall of orange home with gravel ground in US Southwest.

Arizona Court Rejects Local Control Over Short-Term Rentals

A judge upheld a 2017 law that prohibits local jurisdictions from limiting Airbnbs and other short-term rentals.

December 29, 2025 - New York Post

View of Colorado River with low water line as seen from the Hoover Dam.

Shrinking Colorado River Aquifers Make up 65% of the Basin’s Water Loss

Satellite data reveals that the Colorado River’s groundwater has decreased dramatically since the start of the century.

December 14, 2025 - Earth Data

Two white men pose for official portraits

Kansas and Arizona Senators Unite in Bipartisan bid to Boost Public Transit Funding for Small Cities

Senators Gallego and Moran propose increasing funding to a program serving cities with populations of 50,000 to 200,000 that are “among the most effective and efficient in the nation.”

November 30, 2025 - Hoodline

The Colorado River in Arizona

Arizona Explores Desalination and “Water Swap” with Mexico as Dwindling Water Supply Grows Dire

As the Colorado River shrinks and the river states remain deadlocked in negotiation, Arizona is reaching for ever more drastic strategies to ensure its future water supply.

November 30, 2025 - ABC 15

Two silver Cybertrucks driving down rural road with fog,

Tesla Approved to Operate Uber-like Service in Arizona

State regulators approved a permit for a ride-hailing service, but a permit for driverless taxis is still pending.

November 23, 2025 - Insurance Journal

Purple Phoenix light rail train pulling into outdoor station.

Tempe, Arizona Approves 400 Units of Affordable Housing, Grocery Store Near Light Rail

The mixed-use development will bring a grocery store to an area known as a food desert.

November 19, 2025 - Phoenix Business Journal

Aerial of Central Arizona Project aqueduct full of dark turquoise water surrounded by Arizona desert.

Arizona Plans ‘Game-Changing’ Water System Overhaul

A planned interconnection facility will allow water to flow both ways between the Central Arizona Project and the Salt River Project.

November 10, 2025 - KTAR

Arcosanti community in Arizona desert built with passive architecture techniques.

Arizona is Desperate to Develop Housing in the Desert. This Town Has it Figured Out

An experiment in ‘arcology’ begun in the 1970s offers lessons in passive architecture that works with, rather than against, harsh climates.

October 26, 2025 - Bloomberg CityLab

Aerial of houses under construction in Buckeye, Arizona against desert mountains.

Arizona Overrides Moratorium Imposed due to Water Crisis, Approves up to 60K New Homes

A newly created legal process allows development to proceed if builders agree to bring in renewable water sources and reduce their groundwater use by 25%.

October 24, 2025 - High Country News

Sprawling suburb in Scottsdale, Arizona.

Nearly Half a Million New Arizona Homes Halted Due to Water Crisis

The Arizona Department of Water Resources has put a moratorium on new water supply permits, making the future of planned residential developments uncertain.

October 7, 2025 - High Country News

White Waymo self-driving vehicle in front of Phoenix Convention Center.

What Happens When a Robotaxi Gets Pulled Over?

In Phoenix, a police officer who pulled over a Waymo driving in the wrong lane was “unable to issue citation to computer.”

August 5, 2025 - Arizona Republic

Crowd gathered at train station for grand opening of South Central Extension/Downtown Hub in Phoenix, Arizona.

Phoenix Light Rail Extension Opens

The South Central line extends 5.5 miles of rail into South Phoenix neighborhoods, bringing the city’s total light rail network to 35 miles.

June 11, 2025 - Mass Transit

Purple Phoenix light rail train connected to overhead wires at sunset.

Phoenix Announces Opening Date for Light Rail Extension

The South Central extension will connect South Phoenix to downtown and other major hubs starting on June 7.

April 17, 2025 - Arizona Republic

Google street view of vacant lot in Phoenix, Arizona.

Phoenix Facilitates School-to-Affordable Housing Development

Two Phoenix school districts are selling their underused properties to build over 200 units of affordable housing.

February 25, 2025 - The Copper Courier

Colorful two-story buildings close to each other in Culdesac Tempe development.

Culdesac Tempe Defies Expectations

Despite initial skepticism about its true potential for sustainable urbanism, the built-from-scratch “car-free neighborhood” is widely popular with its residents.

February 10, 2025 - Dwell

Aerial view of downtown Phoenix, Arizona.

Urban Forest Initiative Launched in Phoenix to Combat Extreme Heat

Arizona State University's $5 million Greater Phoenix Urban Forestry Accelerator aims to combat record-breaking heat, improve shade coverage, and create green job pathways in underserved neighborhoods.

January 13, 2025 - Northeast Valley News

Bus stop with agave mosaic in Phoenix, Arizona.

Phoenix Shade Plan Focuses on Bus Stops

The city’s updated Shade Master Plan calls for trees and built structures at bus stops to protect residents from heat.

January 9, 2025 - Smart Cities Dive

Small trees on city sidewlak with glass buildings in background.

Cities Prioritize Urban Reforestation to Combat Heat and Revitalize Communities

Cities like Phoenix, Chicago, and Boise are prioritizing urban reforestation as critical green infrastructure to combat extreme heat, address environmental inequities, and foster community revitalization.

December 20, 2024 - USGBC

Abandoned oil well against hill covered in blooming orange flowers in Carrizo Plain National Monument, California.

Plugging the Gap: Taxpayers Shoulder the Burden of Orphaned Oil and Gas Wells

Taxpayers, federal agencies, and tribal governments are working to address Arizona's orphaned oil and gas wells, which pose environmental and health risks, while advocates call for greater accountability from oil and gas companies.

December 2, 2024 - Cronkite News

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.