Location guide · King County, WA
Find a property owner in King County, Washington
King County takes in Seattle and the surrounding area. In Washington, deeds are recorded by the county auditor or recorder, and property is assessed by the county assessor. Those offices give you the owner of record and mailing address one parcel at a time; for a whole list, an owner-data tool returns owners, phones (DNC flagged) and emails in one pass.
What's on a King County property record
- The recorded owner name (person or LLC)
- The mailing address (often different from the property location for absentee owners)
- Assessed value and tax history
- Property characteristics (lot size, year built where applicable, square footage)
- A link to the recorded deed in most counties
Working King County records
Official sources used for Seattle addresses:
- King County Department of Assessments — Owner of record, mailing address and parcel details by address or parcel number.
- King County Recorder's Office — Recorded deeds and other real property documents (search from King County's website).
Washington collects a real estate excise tax on sales, and the excise tax affidavit includes the sale price. Sales in King County are generally visible in public records.
Record searches give you a name and a mailing address, not a phone number. Plan a second step to get phones and emails, and screen them against Do Not Call before you dial.
Common questions
How do I find the owner of a property in King County?
The King County property appraiser or assessor website publishes the recorded owner name and mailing address for every property in the county at no charge. For a list of addresses, an owner-data tool resolves each one directly to the verified owner with phones (DNC flagged) and emails.
Where do I find King County property records?
Assessment and owner-of-record data come from the county assessor; recorded deeds, mortgages and liens are with the county auditor or recorder. Most King County offices offer an online search by address or parcel number.
Is it legal to look up property owners in King County?
Public records in Washington are open to anyone, so the lookup itself is fine. Before you call, remove Do Not Call numbers and make sure texts comply with the TCPA. Some states add their own telemarketing rules on top.