Sectors

In 1960, the Irvine Company commissioned architect William Pereira to create a general plan for the entire Irvine Ranch. The plan was developed for three distinct topographies on The Ranch: The Coastal Sector, with 35,000 acres including UC Irvine; the Valley Sector, with 22,000 acres of flat land that make up The Ranch's central area, and the Mountain Sector, with 36,000 acres that cover The Ranch's northeastern section.

Planning by sector with these distinct topographies in mind would make the implementation of the Master Plan a more manageable, realistic process.

The function of The Irvine Ranch® Master Plan is to guide development and to set standards. Within this framework, the plan is designed to be flexible in order to address the needs and opportunities presented by cultural, economic and environmental changes and particularly to fulfill the needs of the people who choose to live and work here.

For more information on each of the sectors, please visit:

Coastal Sector
Valley Sector
Mountain Sector