Skip to Content

Accessibility Assistance
Click this image of the Sonoma County Seal to move to the home page for the County of Sonoma.

County of Sonoma, California

ClerkRecorderAssessorRegistrar of Voters   

William F. Rousseau
Sonoma County Clerk-Recorder-Assessor

Photo of William 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 visit any of our division offices Monday through Friday 8 a.m. to 5 p.m., or contact me by email. Please visit our Contact Us page for our division office locations and telephone numbers.

William 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 Department. This merger is an effort to provide better-integrated, efficient, and public-focused services to you, the Sonoma County taxpayer.

Our combined department comprises the following divisions:

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.

Following is a search field. Tab once to place your cursor in the search field, then type your search criteria, press Enter (or Return) to start the search.

Please explore: