
Small Contractor and Supplier Certification
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
Right to Privacy
King County, as a government entity, conducts public business and records related to the business of King County are generally available for public review. King County is committed, to the extent allowable by law, to protect and secure personal information contained in King County records. This privacy commitment must be balanced with the rights of public access under chapter 42.56 RCW, Washington Public Records Act, consistent with chapter 2.14 of the King County Code and any other applicable federal, state, and local statute or regulation.
Register for Bid and Proposal email notification:
Questions about Certification?
SCSCertification@kingcounty.gov
(206) 477-9734
Business Hours
Monday - Friday
8 a.m. - 4:30 p.m.