Online Vendor Registration
How to register
Registration is a 3-part process that takes about 20 minutes. You'll need your business tax ID number.
TIP: Watch the video for step-by-step instructions.
Already registered? Customize your account
Why register?
As a registered King County vendor, you can...
- Sign up for email notices of new solicitations
- Apply to participate in roster programs (unadvertised contracts)
- Be featured in our online directory of approved vendors
- Get priority when submitting quotes for purchases between $10,000 - $50,000
Small business certification
Small Contractor & Supplier (SCS) certification is like a gold star next to your name, making you eligible for special consideration.
You can register as a vendor and certify your small business to maximize your opportunities.
Contact Us
Phone: (206) 263-9400
TTY Relay: 711
Fax: (206) 296-7676