Vendor Assistance – ISD
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.

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

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

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.