To Beat the Heat, L.A. Mandates Cool Roofs

In case you haven't heard, L.A. gets a lot of sun. While this is great for getting a tan, it presents a challenge for mitigating the heat island effect and rising temperatures. New legislation requires that the roofs of new homes help beat the heat.

1 minute read

December 20, 2013, 12:00 PM PST

By Jonathan Nettler @nettsj


"On Tuesday the Los Angeles City Council unanimously passed a building code update that will require all new and refurbished homes to have cool roofs, which use sunlight-reflecting materials," reports Ari Phillips. "Los Angeles is the first major city to require such a measure, which was pushed for by the local organization Climate Resolve."

According to Climate Resolve, the landmark ordinance will help the city:

  1. become more resilient and healthier on hot days
  2. reduce heat related hospitalizations
  3. improve air quality by reducing the formation of ozone
  4. inoculate against power outages
  5. reduce homeowners electricity bills
  6. reduce greenhouse gas emissions
  7. provide a more pleasant home environment

Wednesday, December 18, 2013 in Climate Progress

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

White Waymo autonomous car driving fast down city street with blurred background at night.

Seattle's Plan for Adopting Driverless Cars

Equity, safety, accessibility and affordability are front of mind as the city prepares for robotaxis and other autonomous vehicles.

June 16 - Smart Cities Dive

Two small wooden one-story homes in Florida with floodwaters at their doors.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?

With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

June 16 - Governing

People riding bicycles on separated bike trail.

With Protected Lanes, 460% More People Commute by Bike

For those needing more ammo, more data proving what we already knew is here.

June 16 - UNM News