Arizona Valley's Growth Redefines 'Edge'

Growth has been so fast that it has redrawn the Valley's traditional boundaries, and is no longer controlled and predictable.

1 minute read

May 12, 2003, 5:00 AM PDT

By Chris Steins @planetizen


"Growth has redrawn the Valley's traditional boundaries, pushing past mountain ranges, riverbeds and even county lines, forging a metropolitan area of more than 9,200 square miles that is bigger than seven states, including Massachusetts. What was once an orderly spread through easily defined suburbs now follows no predictable course.... 'We're on the edge of what's habitable,' said Phoenix attorney Grady Gammage, author of the book Phoenix in Perspective. 'In my lifetime, the nighttime low temperatures in the summer have risen by 11 degrees. If we continue to urbanize so that it continues to get hotter, that'll be a limit.'"

Thanks to Chris Steins

Sunday, May 11, 2003 in The Arizona Republic

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

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

June 11, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

Yellow single-seat Japanese electric vehicle drivign down road.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs

The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

June 6, 2025 - PC Magazine

SMall backyard cottage ADU in San Diego, California.

San Diego Votes to Rein in “Towering” ADUs

City council voted to limit the number of units in accessory buildings to six — after confronting backyard developments of up to 100 units behind a single family home.

15 minutes ago - NBC San Diego

Large tower under construction with crane with American and Texas flags in downtown Austin, Texas against sunset sky.

Texas Legislature’s Surprising Pro-Housing Swing

Smaller homes on smaller lots, office to apartment conversions, and 40% less say for NIMBYs, vote state lawmakers.

1 hour ago - The Texas Tribune

Red brick five-story multifamily housing building in Edmonton, Alberta, Canada.

Even Edmonton Wants Single Staircase Buildings

Canada's second most affordable major city joins those angling to nix the requirement for two staircases in multi-family buildings.

2 hours ago - Canadian Broadcasting Corporation (CBC)