Assessor's Office Locations
Elected Official
Janice Atkinson

Title
Sonoma County Assessor

Main Office Location
585 Fiscal Drive, Suite 103F
Santa Rosa, California 95403
Main Phone: 707-565-1888
Toll Free: 800-244-1034
Fax: 707-565-3317

Business Property Division
585 Fiscal Drive, Suite 104F
Santa Rosa, California 95403
Main Phone: 707-565-1330
Boats: 707-565-2844
Aircraft: 707-565-2861
Toll Free: 800-244-1034
Fax: 707-565-3317

Petaluma Branch Office
Petaluma City Hall
11 English Street, Room 20
Petaluma, CA 94952
Phone: 707-769-9755
FAX: 707-778-9346
(Open Tuesdays 8 AM to 5 PM)

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Sonoma County Assessor's Office
Santa Rosa, California