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Community of Partners

A community of diverse and dedicated stewardship partners has helped ensure that the wildlands and parks of The Irvine Ranch will be protected and accessible, forever.

Irvine Company has worked closely with conservation partners and other landowners to permanently preserve and protect America’s largest urban open space preserve, located within 30 minutes of three million people.  The landowners of the open spaces on The Irvine Ranch — Irvine Company, City of Irvine, County of Orange, and California State Parks — gratefully acknowledge the contributions of the many agencies, organizations and individuals who partner with us to keep the land beautiful, healthy and available for exploration.



  • Audubon California
  • California Coastal Commission
  • California Coastal Conservancy
  • California Department of Fish and Game
  • California Department of Transportation
  • California Resources Agency
  • California State Parks
  • California State University, Fullerton
  • City of Anaheim
  • City of Irvine
  • City of Irvine's Open Space Preserve
  • City of Laguna Beach
  • City of Newport Beach
  • City of Orange
  • City of Tustin
  • County of Orange
  • Crystal Cove Conservancy
  • Endangered Habitats League
  • Equestrian Coalition of Orange County
  • Friends of Harbors, Beaches & Parks
  • Friends of the Newport Coast
  • Friends of the Tecate Cypress
  • Hills For Everyone
  • Irvine Ranch Water District
  • Juaneno Band of Mission Indians
  • Laguna Canyon Conservancy
  • Laguna Canyon Foundation
  • Laguna Greenbelt, Inc.
  • Metropolitan Water District
  • Municipal Water District of Orange County
  • OC Parks
  • Orange County Business Council
  • Orange County Coastkeeper
  • Orange County Farm Bureau
  • Orange County Fire Authority
  • Orange County Flood Control District
  • Orange County Transportation Authority
  • Orange County Water District
  • Planning and Conservation League
  • San Joaquin Marsh Wildlife Sanctuary
  • Santa Ana Regional Water Quality Control Board
  • Santa Ana Watershed Planning Agency
  • Santiago County Water District
  • Sea and Sage Audubon
  • Silverado Modjeska Parks & Recreation District
  • Southern California Edison
  • Southern California Gas Company
  • State Water Resources Control Board
  • The Irvine Company
  • The Nature Conservancy
  • The Nature Reserve of Orange County
  • Trails 4-All
  • Transportation Corridor Agencies
  • Trust for Public Land
  • U.S. Army Corps of Engineers
  • U.S. Department of the Interior
  • U.S. Environmental Protection Agency
  • U.S. Fish & Wildlife Service
  • U.S. Soil Conservation Service
  • University of California Agriculture and Natural Resources Cooperative Extension
  • University of California Natural Reserve System
  • University of California, Irvine