Skip to Content
Department of Agriculture, Weights & Measures

Agriculture, Weights & Measures

The Department of Agriculture/Weights and Measures enforces the laws and regulations of the California Food and Agriculture Code, the California Business & Professions Code and the California Code of Regulations while serving at the discretion of the County Board of Supervisors and CDFA's  Secretary of Food & Agriculture. Sonoma County's Department of Agriculture/Weights & Measures employs a staff of thirty-nine people and has its main office in Santa Rosa.  To serve the public's needs, two small satellite offices with limited public hours are operated in the cities of Sonoma and Petaluma.


  • A thriving agricultural industry, healthy community, environment, and economy


  • To promote and protect agriculture, the health and safety of our community, environment and the economy through education and the enforcement of laws and regulations.

New Sonoma Office Hours Effective October 1, 2022

Effective October 1, 2022, our Sonoma Office located at 19722 8th Street East in Sonoma will be open on Wednesdays from 11:00 am - 2:00 pm or by appointment.

Please note our Petaluma Office location closed in 2022.

Our main office located at 133 Aviation Boulevard, Suite 110 in Santa Rosa is open Monday - Friday from 8:00 am - 12:00 pm and 1:00 pm - 4:00 pm (closed 12:00 pm – 1:00 pm). Information regarding our programs can be found online at or by calling (707) 565-2371 during business hours.

Agriculture/Weights & Measures Department is Now Open to the Public

The Department of Agriculture/Weights & Measures office is open to the public beginning Tuesday, June 15, 2021.  Normal business hours are from 8:00 am to noon and 1:00 to 4:00 p.m. Monday through Friday. 

Mitigation measures including face masks, health screening, and physical distancing will remain in effect pending further direction.  The front door will continue to remain accessible using the doorbell. 

The Sonoma office hours are Tuesday and Thursday from 1:30 to 2:30 p.m.  The Petaluma office is available by appointment only.

To access our services, you may call (707) 565-2371 or send an email to  Documents may also be placed in the locked drop box outside the front door of our main office.  Voicemail, email, drop box, and mail are checked regularly each business day.  

Thank you for your patience and understanding while we continue to work together to keep our community safe.

Upcoming Events

OCT 2022
7:00 - 8:30 p.m.

Fish and Wildlife Commission Meeting

NOV 2022
9:00 a.m. - 3:00 p.m.

Plastic Recycling Event