Purchasing Services for all Sonoma County Departments are centralized under the Purchasing Division. Vendors are encouraged to contact the Purchasing Division Buyers to discuss the County’s requirements for specific products.
 Supplier's
Guide — Doing Business With the County of Sonoma
Standard Terms and Conditions for Purchase Orders and Blanket Purchase Orders
General
Information for Construction Vendors
Service Agreements - Policies and Procedures
ENTER the Online Purchasing System
View the  Online Quote Tutorial
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