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)
Sonoma county section; PDF page 25
Sonoma
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)
Sonoma County — Telephone; PDF page 25
(707) 565-2431
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Address
575 Administration Drive, Room 104A, Santa Rosa, CA 95403
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)
Sonoma County — Address; PDF page 25
575 Administration Drive, Room 104A, Santa Rosa, CA 95403
Agent source review: October 13, 2026 · Snapshot 88eef089319b69ca
Hours as listed
8 am-5 pm
Source & saved evidence
California Secretary of State · 2026 California Roster — County Officials (opens in a new tab)
Sonoma County — Business Hours; PDF page 25
8 am-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.
County government · Source checked October 12, 2026Find building permits, plan review and construction inspections. Find zoning maps and official property land-use information.
County government · Source checked October 14, 2026Unincorporated Sonoma County, outside its nine incorporated cities.
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, 2026County 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, 2026Find the right local authority and check whether a license or another permit is needed.
County government · Source checked October 16, 2026County mental health service information and access contacts. Providers assess eligibility and current care arrangements.
County government · Source checked October 16, 2026Sonoma county mental health plan referral; individual eligibility is assessed by the provider