The Alliance works in multi-sector collaboration with partners at the local, regional, state and federal levels to advance policies and investments that promote powerful, healthy communities in transportation, land use, housing, food, water, climate change, and more. We work to elevate health justice and a Health in All Policies approach to policies and investments in these areas.

We work with our member health departments to build their capacity to engage and influence other sectors around health and equity. We also infuse health and equity serving on advisory committees in active transportation, land use, climate and other issues, and engaging in policy actions such as submitting comment letters and providing testimony on important healthy communities' issues where appropriate.

We created the California Healthy Places Index® (HPI) to explore factors that impact local health and help determine which areas would benefit most from physical improvements and investment. Some of the earliest HPI adopters included the California Strategic Growth Council, California Transportation Commission, CalTrans, Governor’s Office of Planning and Research, California Natural Resources Agency, and Southern California Association of Governments, who are all using HPI for grantmaking, assessments and decision-making, and planning guidance. HPI has been utilized hundreds of government agencies, health care institutions, community groups and other sectors, and it has been used to allocate over one billion grant dollars from state agencies and philanthropy, directing resources to communities most in need. Highlights of some use cases can be found here.