What is covered
Roster fields are self-reported by local jurisdictions; officeholders and election districts are not imported.
Source & saved evidence
California Secretary of State · 2026 California Roster — County Officials (opens in a new tab)
Contra Costa county section; PDF page 4
Contra Costa
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Source-reported contacts
Telephone
Source & saved evidence
California Secretary of State · 2026 California Roster — County Officials (opens in a new tab)
Contra Costa County — Telephone; PDF page 4
(925) 655-2075
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Address
1025 Escobar Street, 4th Floor, Martinez, CA 94553
View address on map (opens in a new tab)
Source & saved evidence
California Secretary of State · 2026 California Roster — County Officials (opens in a new tab)
Contra Costa County — Address; PDF page 4
1025 Escobar Street, 4th Floor, Martinez, CA 94553
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Hours as listed
Monday through Friday 8 am to 5 pm
Source & saved evidence
California Secretary of State · 2026 California Roster — County Officials (opens in a new tab)
Contra Costa County — Business Hours; PDF page 4
Monday through Friday 8 am to 5 pm
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Reviewed office guides
Find property assessments, parcel information and property tax exemptions.
County government · Source checked October 12, 2026Find recorded documents, recording requirements and certified copies. Find marriage licensing and county clerk services. Find fictitious business name (FBN / DBA) filing and renewal instructions. Business licenses are a separate service.
County government · Source checked October 12, 2026Find property tax bills, payment options and tax collection services. Find the local office for a business license or business tax certificate. Check the business activity and place covered by each service.
County government · Source checked October 12, 2026Find building permits, plan review and construction inspections.
County government · Source checked October 14, 2026County building permits and inspections for unincorporated Contra Costa and Clayton, Hercules, Lafayette, Moraga and Orinda. Planning approvals within those cities remain with the city or town.
Find voter registration, ballots, voting locations and local election information.
County government · Source checked October 14, 2026Find food assistance, cash benefits and support for children, adults and families. County Medi-Cal eligibility services for applications, renewals and case changes.
County government · Source checked October 14, 2026Find government records, request instructions and the agency that holds them.
County government · Source checked October 14, 2026Assessment appeals board function; provider and jurisdiction must be verified.
County government · Source checked October 15, 2026Find material-specific recycling, reuse and disposal resources.
County government · Source checked October 15, 2026Collection oversight covers portions of unincorporated Contra Costa County; use the county recycling service directory to confirm the provider for an address.
County or regional child support agency; case administration, parentage, orders and payment assistance.
County government · Source checked October 15, 2026Local help with veteran claims, benefits, college fee waivers and referrals.
County government · Source checked October 15, 2026County IHSS programme guides, with recipient assessment separate from provider enrollment and payroll.
County government · Source checked October 15, 2026Emergency preparedness, local alert programmes and official evacuation information.
County government · Source checked October 15, 2026County programmes responding to suspected abuse, neglect and exploitation of older and dependent adults in the community.
County government · Source checked October 15, 2026County mental health service information and access contacts. Providers assess eligibility and current care arrangements.
County government · Source checked October 16, 2026Contra Costa county mental health plan referral; individual eligibility is assessed by the provider