Vendor Assistance

  • Vendor Relations

    Provides vendors with assistance on bids, awards, registration, and information on certification as a small business.

    (323) 267-2725
    Monday - Thursday 7 a.m. - 5 p.m.
  • ISD Hotline

    Provides help for any other questions or customer service issues.

    (323) 267-3108
    Monday - Thursday 7 a.m. - 5 p.m.
  • Vendor Payments Inquiry

    Provides assistance with invoice payments for ISD procurements and contracts only. Each County department has their own Accounts Payable Unit.

    (323) 267-2960
    Monday - Thursday 7 a.m. - 5 p.m.

    Send EmailPayment FAQ's

  • County Operators

    Provides information on how to contact all County departments and services. It is supported 24 hours a day, 7 days a week.

    (213) 974-1234
    24 Hours a day - 7 Days a week
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Vendor Websites

  • Vendors may alternatively choose to utilize the following websites for assistance as indicated below.
  • Register as a LA County vendor


  • Small business certification

    Gives certified companies a 5% preference on bids for all California Counties. Transfer to the State of California's website.

    State of California's website

  • Doing business with the County

    To see open bids and vendor fairs, County procurement contacts, etc. There are also links to the state site above and registration for the local women and minority owned companies with Office of Small Business.

    Doing business with the County

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