Purpose and Process

​​Key Issues

Diamond Bar’s updated General Plan will address issues spanning all aspects of life in the City. These include, but are not limited to:

  • Managing Diamond Bar’s future growth
  • Revitalizing key opportunity sites
  • Attracting high quality businesses and jobs​
  • Protecting natural resources
  • Promoting high quality design for buildings and public spaces
  • Maintaining public safety and municipal services
  • Accommodating the needs of an aging population

Finally, the updated General Plan will be crafted in a way that is clear and easy to use, and can be efficiently revised to incorporate future updates and amendments. 

General Plan Advisory Committee (GPAC)

  • Teruni Evans
  • Lee Mao
  • Mark St. Amant
  • David Busse
  • Cindy Liu
  • Tony Torng
  • Larry Black
  • Amy Harbin
  • Gil Rivera
  • Ching Liu
  • Victor Ramirez
  • Paul Sherwood
  • Mehendra Garg
  • Brian Worthington
  • Joyce Young

Consultant Team

Dyett & Bhatia, Urban and Regional Planners is leading the consultant team.

Additional consultants, with specializations in different disciplines, are:

See the schedule in Chinese or Korean

​​​​​​​The City of Diamond Bar is embarking on an exciting new project: the update of our General Plan. New opportunities, challenges, and approaches have emerged in the years since the current General Plan was adopted in 1995. The General Plan Update project will be a unique and important opportunity for community members to participate and share their ideas about the City’s future.

The General Plan is the City’s primary guide for development, housing, transportation, environmental quality, public services, and parks and open spaces. The Update process is a collaborative effort between the City and its residents to create a vision and a blueprint for development through 2040. Residents have the opportunity to get involved at all stages of the planning process, from the initial visioning and exploration of plan alternatives to the selection of the Preferred Plan and review of its accompanying Environmental Impact Report.

In conjunction with the General Plan, we will be preparing an Environmental Impact Report (EIR). The EIR ensures that environmental opportunities and constraints are identified and incorporated into the planning process, and it identifies policies that can mitigate any adverse environmental effects of other aspects of the plan. The EIR is a public process as well, and we invite your participation and input during this stage of the planning effort.

A Climate Action Plan (CAP) will also be prepared as part of the General Plan Update. A CAP is a roadmap that outlines policies, programs and implementation strategies designed to reduce a city’s GHG emissions. CAPs are made up of three broad components: an inventory of current emissions, GHG targets and forecasts, and corresponding GHG mitigation measures. The CAP will represent City’s commitment to reducing greenhouse gas (GHG) emissions and complying with State GHG reduction standards. Read more about the CAP here

Building on our Strengths

The City of Diamond Bar has accomplished a great deal since the adoption of its existing General Plan more than 20 years ago. Today, Diamond Bar is known for its quiet residential neighborhoods, parks and open space, and great schools. Successful planning efforts have resulted in the development and preservation of highly desirable neighborhoods, while maintaining close proximity to the major economic markets of Orange, Riverside, and San Bernardino counties. As residents well know, these attributes make Diamond Bar a great place to live, work, and play. The General Plan Update will embrace these positive qualities moving forward. 


It is anticipated that the City will have comprehensively updated its General Plan and prepared an accompanying Environmental Impact Report by late 2019. The diagram below illustrates the phases of the planning process and shows all of the opportunities for public participation throughout. Click on the picture to see a larger diagram.