Developing L.A.'s Urban Core

The Planning Report interviews two of the most prominent developers shaping Los Angeles' urban core.

1 minute read

November 28, 2001, 9:00 AM PST

By Chris Steins @planetizen


The mark Ira Yellin and Dan Rosenfeld have left on Downtown Los Angeles cannot be measured by the number of projects they have worked on, but rather in the profound love that they have nurtured in a generation of residents who now live, work and play in our urban core. In hopes of continuing that legacy, Urban Partners, their year-old development company, was recently selected as developer for both the Caltrans Headquarters and the L.A. County Courthouse. The Planning Reports interviews them to gain insight into these projects and their meaning for the continuing redevelopment of the core.

Thanks to Jon Lonner

Saturday, November 24, 2001 in The Planning Report

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

September 30, 2026 - Zachary Whalen

The mayor of Baltimore speaks into a microphone in front of a rally for more state transportation funding from Maryland.

‘Going backwards:’ Baltimore mayor, students rally against state's transit funding plan

Maryland's proposed six-year plan provides no funding for Baltimore’s BMORE bus program and reduces its road maintenance funding.

October 2, 2026 - Baltimore Sun

A rendering of the waterfront development, which shows a lit-up stage by the waterfront and people walking about.

Detroit to transform waterfront with $2.2 billion investment

Developers will convert about 18 acres of unused parking lot space into civic spaces.

October 2, 2026 - ABC 7

A rendering of the courthouse. The middle section is glass, the far left and right pillars are white.

Planned $2 billion courthouse in MA sparks tension with local government

Springfield owns an essential piece of the land developers intend to build on, and some city officials do not want to see the project come to fruition.

6 hours ago - Boston Globe

A person installing solar panels on a wall. The panels are tilted slightly, the head of the person is hidden under one of them.

Californians can now transform balconies into power generators

Gov. Gavin Newsom has legalized plug-in solar technology, which allows residents to plug solar panels directly into their outlets

7 hours ago - Grist

An aerial view of the new state park, with a forest and lake visible under a sunset.

This 85-year-old ranch is Texas’ newest state park

The 650 acre ranch is one of the largest parcels of land along Lake Palestine.

October 5 - Houston Chronicle

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