San Diego County Budget: Structure and Public Access

San Diego County's annual budget is one of the largest county spending plans in California, governing billions of dollars in public expenditures across health, public safety, infrastructure, and social services. Understanding how that budget is built, adopted, and monitored is essential for residents, businesses, and advocates who interact with county government. This page explains the structural components of the county budget, the adoption process, and the mechanisms available for public engagement and oversight.

Definition and scope

The San Diego County budget is the official financial plan adopted by the San Diego County Board of Supervisors that authorizes all county expenditures and appropriates revenues for a fiscal year running from July 1 through June 30. It is a legally binding document — no county department may spend funds not appropriated within it.

The budget encompasses the General Fund, which finances core discretionary services such as law enforcement, public health, and parks, as well as special revenue funds restricted to specific purposes (for example, road funds, grants, and tobacco settlement funds). Enterprise funds, internal service funds, and capital project funds are also incorporated into the total spending picture.

For fiscal year 2023–24, the San Diego County Board of Supervisors adopted a total budget of approximately $8.1 billion (San Diego County CAO Proposed Budget FY 2023–24). The General Fund component represents a subset of that total, funding services that do not have a dedicated revenue stream.

Scope, coverage, and limitations: This page addresses the budget of the County of San Diego as a governmental entity — it does not cover the City of San Diego's separate budget process (described on the San Diego City Budget Process page), nor does it address the budgets of the county's 18 incorporated cities, independent special districts, or regional agencies such as SANDAG or the San Diego Water Authority. Each of those entities maintains a distinct fiscal process under its own governing board. California state law, specifically the County Budget Act (California Government Code §§ 29000–29144), sets the mandatory procedural framework within which the county operates.

How it works

The county budget follows a structured annual cycle with defined milestones mandated under California law.

1. Departmental requests (January–February): Each county department submits a budget request to the Chief Administrative Officer (CAO), outlining proposed expenditures for the upcoming fiscal year.
2. CAO Proposed Budget (April–May): The CAO consolidates departmental requests and publishes a proposed budget, which serves as the primary public document for review. Under California Government Code § 29062, this document must be filed with the Clerk of the Board at least 30 days before adoption hearings begin.
3. Public hearings (May–June): The Board of Supervisors holds public hearings at which residents, advocacy organizations, and department heads may testify. These hearings are legally required and publicly noticed.
4. Board adoption (June): The Board adopts the final budget by resolution before the July 1 start of the fiscal year. Amendments may be made throughout the year through supplemental appropriations approved by majority vote of the Board.
5. Auditor-Controller oversight (year-round): The San Diego County Auditor-Controller monitors expenditures against appropriations and produces quarterly and year-end financial reports.

The county distinguishes between discretionary and non-discretionary spending. Non-discretionary items — state and federally mandated programs such as Medi-Cal administration, child welfare services, and public safety realignment — consume the largest share of General Fund appropriations and leave supervisors limited flexibility. Discretionary spending, by contrast, represents the portion the Board can reallocate based on policy priorities.

Common scenarios

Three situations illustrate how the budget structure operates in practice:

Midyear supplemental appropriations: When an emergency arises — such as a wildfire response or a public health outbreak — the CAO may bring a supplemental appropriation request to the Board. These requests bypass the annual cycle but require the same majority vote and public meeting notice as routine budget actions.

State and federal pass-through funding: A substantial portion of county expenditures is reimbursed by or passed through from the state and federal governments. The county's Health and Human Services Agency, for example, administers programs funded largely by California's Department of Social Services and the federal Centers for Medicare and Medicaid Services. When state or federal allocations change, county program budgets adjust accordingly — sometimes without a formal Board vote if the change falls within an existing appropriation authority.

Capital improvement projects: Major infrastructure investments — facilities, roads, flood control — are budgeted separately under the Capital Improvement Program (CIP). The CIP is a multi-year planning document, though appropriations are made on an annual basis. Debt financing through bonds may also be employed; information on related financing mechanisms appears on the San Diego Bonds and Ballot Measures page.

Decision boundaries

The Board of Supervisors holds final appropriation authority, but several constraints define the limits of that authority:

• State mandates: California law requires counties to fund specific services at defined levels. Failure to do so can trigger state intervention or the loss of funding allocations.
• Federal grant conditions: Grant-funded programs carry compliance conditions; reprogramming federal dollars requires grantor approval.
• Proposition 172 (1993): This California ballot measure dedicates a 0.5% share of state sales tax to public safety. Counties receive allocations but may not redirect those funds to non-public-safety uses (California Legislative Analyst's Office, Proposition 172).
• Reserve policy: The county maintains a General Fund reserve target. The Board may draw on reserves in emergencies but must adopt a plan to restore them.

Public access to budget documents is guaranteed under the California Public Records Act (California Government Code §§ 7920–7931). All adopted budgets, proposed budgets, and mid-year amendments are posted on the county CAO's website. Residents seeking additional detail on county department functions can consult the San Diego County Departments page, while the broader context of county governance within the regional civic structure is covered at sandiegometroauthority.com.

References

• San Diego County Chief Administrative Officer — Budget
• California Government Code §§ 29000–29144 — County Budget Act
• California Government Code §§ 7920–7931 — California Public Records Act
• California Legislative Analyst's Office — Proposition 172
• San Diego County Auditor-Controller
• California Department of Finance — County Budget Guidelines