king county public records search guide and tips

What you can find

The public records process in King County is straightforward, but a few pointers will help you find the right file quickly. Whether you are checking property history, court filings, or permits, a well-planned search saves time and avoids duplicate requests.

Most datasets are searchable online, with some records available for immediate viewing and others delivered after review. Expect different systems for courts, property, and agencies, and note that privacy exemptions can limit what is released.

• Court cases: civil, criminal, and family filings
• Property data: deeds, assessments, and sales history
• Licenses and permits: business, building, and land use
• Recorded documents: liens, plats, and ordinances
• Agency records: emails, reports, and policies

Tips and common questions

Search by exact name or parcel when possible, then narrow by date range or case number. If a portal returns no results, broaden terms or try alternate spellings. Fees may apply for certified copies, and some requests require a written description of the record sought. When in doubt, contact the relevant office to confirm availability, expected timelines, and how to appeal a denial.