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Most King County offices will be closed on Monday, May 29, 2017, for Memorial Day.  
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Get certified as a Small Contractor and Supplier (SCS) and increase the competitiveness of your firm as a contractor, consultant or supplier for King County contracts.

​Select a Method

CPA Affidavit Method (preferred)

Complete and submit the following forms (download each file below separately):

  • Business Application (download)
  • CPA Affidavit (Certifying each Owner's Personal Net Worth) (download)
  • CPA Affidavit (Certifying Business Size) (download)
  • Avg. review period: Less than 10 business days

Traditional Method

Complete and submit the following forms:

  • Business Application
  • Personal Net Worth form for each owner
  • Past 3 years Company Federal Income Tax Statement (all schedules)
  • Avg. review period: 15 to 30 business days
Click here to download packet

Questions about Certification?
(206) 477-9734

Business Hours

Monday - Friday
8 a.m. - 4:30 p.m.

Contact Us

Phone: (206) 263-9400

TTY Relay: 711