Doing Business with the County

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 (PDF: 52kB)

Standard Terms and Conditions for Purchase Orders and Blanket Purchase Orders (PDF: 30kB)

General Information for Contractors (PDF: 305kB)

Protests & Appeals (PDF: 29kB)

Local Preference Policy for Goods (PDF: 14kB)

Local Preference Policy for Services (PDF: 20kb)

Local Business declaration for services (Word document)

Green Purchasing Policy (Environmentally Preferable Purchasing) (PDF: 50kB)

ENTER the Online Purchasing System

Online Tutorials