• Recorder and Assessor building on Administration Drive
  • Getting information
  • Historical Records
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Clerk • Recorder • Assessor •
Registrar of Voters

William F. Rousseau
William F. Rousseau

I am honored to serve you as Sonoma County’s Clerk-Recorder-Assessor and I’m always interested in receiving your feedback and questions. You’re invited to contact me at my office in the Assessor’s Division or contact me by email. Please visit our Contact Us page for our division office locations and telephone numbers.

William F. Rousseau

On October 30, 2001, Sonoma County merged two previously separate departments, the Clerk-Recorder and the Assessor, into the combined Sonoma County Clerk-Recorder-Assessor-Registrar of Voters Department. This merger is an effort to provide better-integrated, efficient, and public-focused services to you, the Sonoma County taxpayer.

The Assessor’s Office is responsible for providing accurate and timely property assessments and for determining eligibility for various property tax exemptions and exclusions.

The County Clerk Division of the Clerk-Recorder-Assessor Department has a variety of duties, including issuing marriage licenses, filing fictitious business name statements, processing notary bonds, handling environmental documents, and performing civil marriage ceremonies. The County Clerk Division also issues certified copies of marriage, birth and death records on behalf of the County Recorder.

The Recorder maintains various land and finance documents for Sonoma County. Typical land documents include deeds, leases, mining claims, subdivision maps, homestead declarations and records of survey. Typical finance documents include trust deeds, notices of default, reconveyances, and various liens. This division of the Clerk-Recorder-Assessor also collects the Documentary Transfer Tax when real property exchanges hands.

The Registrar of Voters registers Sonoma County voters and maintains the County’s voter registration file, conducts federal, state and local elections held in the county, files candidates’ campaign statements, and performs various other duties related to elections.

Important Notice

The staff of the Sonoma County Clerk-Recorder-Assessor's Office are forbidden by California legal codes to practice law or provide legal advice; this prohibition includes giving advice about what forms you might need or how you should fill them out.

National Voter Registration Day – September 23, 2014

National Voter Registration Day 2014 thumbnail 75Join the Sonoma County Board of Supervisors, the Sonoma County Registrar of Voters Office and community organizations around the county in Celebrating Democracy in America on National Voter Registration Day, September 23, 2014.

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585 Fiscal Drive
Suite 103F
Santa Rosa, CA 95403
Phone: (707) 565-1888
Contact Us

Consolidated Primary Election - November 4, 2014

Polling Place and Sample Ballot Lookup

View Voter Guide

Find your Polling place and your sample Ballot online for the Consolidated Primary Election


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