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Main Office Location - see information on the right.

Petaluma Office

By Appointment Only

Inside Petaluma City Hall
11 English Street
Room 19
Petaluma, CA 95452

Sonoma Office

By Appointment Only

Red Building at Road Maintenance Yard
19722 Eighth Street East
Sonoma, CA 95476

Contact Information

Department of Agriculture / Weights & Measures
Business Hours
Monday – Friday
8:00 AM – 4:00 PM
Closed from noon to 1:00 PM for lunch.

Contact us by Phone
Main Office
133 Aviation Boulevard
Suite 110
Santa Rosa, CA 95403

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