Washington
Unclaimed property is administered by the Washington State Department of Revenuethrough the Claim Your Cash program.
Official search & downloadable data
Search tool
Downloadable file
No official public CSV, Excel, or ZIP owner-data file has been located yet for this state.
Finder & Recovery Rules
Licensing / Registration
No finder license or registration required.
Fee Cap
5% cap — compensation above 5% of the property's expected value is unenforceable; the strictest cap in the country (RCW 63.30.790).
Waiting Period
RUUPA void-window rules apply; mineral-proceeds provisions are void outright (RCW 63.30.790).
Governing Statute
RCW Ch. 63.30 (RUUPA, eff. 2023); finder agreements §§63.30.780–790 (verified June 2026).
Summaries marked “verify” have not been independently confirmed against the current statute text. Nothing here is legal advice — confirm rules with the state administrator or counsel before contacting claimants.
Where county money sits in Washington
Strong surplus state at county level: tax foreclosure excess is held by county treasurers (RCW 84.64.080, three-year claim window) and trustee sale surplus is deposited with the superior court clerk (RCW 61.24.080).
County Directory — Washington
39 counties · 26 with verified sources so far. Rows without a verified link show where the records are typically held —know the direct URL? Submit it and we'll credit you.
| County | Source links |
|---|---|
| Adams Countyverified 2026-07-21Adams County - Foreclosures page (surplus). | |
| Asotin Countyverified 2026-07-21Asotin County - Foreclosures page (surplus). | |
| Benton CountyBenton County - Treasurer foreclosure and distraint page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Chelan Countyverified 2026-07-21Chelan County - Treasurer foreclosure general information page (surplus). | |
| Clallam Countyverified 2026-07-21Clallam County - Tax Foreclosure Sales page (surplus). | |
| Clark CountyClark County — county website only; no dedicated surplus/unclaimed funds page verified yet. | not yet verified |
| Columbia Countyverified 2026-07-21Columbia County - Excess Funds from Tax Foreclosure Sale list (PDF). | |
| Cowlitz CountyCowlitz County - Treasurer foreclosure page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Douglas Countyverified 2026-07-21Douglas County - Tax Foreclosure Information page (surplus). | |
| Ferry Countyverified 2026-07-21Ferry County - Treasurer Document Center (surplus). | |
| Franklin Countyverified 2026-07-21Franklin County - Tax Foreclosure Sales page (excess proceeds). | |
| Garfield CountyGarfield County - Treasurer foreclosure page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Grant CountyGrant County - Tax Foreclosure Information page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Grays Harbor Countyverified 2026-07-21Grays Harbor County - Treasurer foreclosures page (surplus). | |
| Island Countyverified 2026-07-21Island County - dedicated Foreclosure Surplus Funds page. | |
| Jefferson Countyverified 2026-07-21Jefferson County - Tax Foreclosure page (surplus). | |
| King CountyKing County — county website only; no dedicated surplus/unclaimed funds page verified yet. | not yet verified |
| Kitsap Countyverified 2026-07-21Kitsap County - Excess Proceeds Information (PDF). | |
| Kittitas CountyKittitas County - Treasurer foreclosures page; surplus claim process confirmed via search but page text not directly confirmable. | not yet verified |
| Klickitat Countyverified 2026-07-21Klickitat County - Auctions page (excess funds / surplus). | |
| Lewis CountyLewis County - Treasurer page (site unreachable during verification); surplus claim process confirmed via search. | not yet verified |
| Lincoln Countyverified 2026-07-21Lincoln County - Tax Foreclosure page (surplus). | |
| Mason Countyverified 2026-07-21Mason County - Foreclosure Proceeds Claim Process page. | |
| Okanogan Countyverified 2026-07-21Okanogan County — mortgageOverage source verified 2026-07-21 via probe (page mentions: excess proceeds; excess funds). | |
| Pacific Countyverified 2026-07-21Pacific County - Property Tax Foreclosure page (surplus). | |
| Pend Oreille Countyverified 2026-07-21Pend Oreille County - Real Estate Tax Foreclosure Sale page (excess funds). | |
| Pierce Countyverified 2026-06-10Pierce County — site blocks automated checks (HTTP 403); needs manual review. | |
| San Juan Countyverified 2026-07-21San Juan County - Foreclosure Information page (excess proceeds). | |
| Skagit CountySkagit County - Treasurer tax foreclosure information page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Skamania CountySkamania County - Tax Foreclosure Information page (site blocks automated checks); no active foreclosures per office statement. | not yet verified |
| Snohomish Countyverified 2026-07-21Snohomish County - Tax Lien Foreclosures page (surplus). | |
| Spokane CountySpokane County - Foreclosure/Distraint page; excess funds process confirmed via search but page text not directly confirmable. | not yet verified |
| Stevens CountyStevens County - Tax Foreclosure Sale page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Thurston Countyverified 2026-07-21Thurston County - Tax-Title General Information page (surplus). | |
| Wahkiakum CountyWahkiakum County - Foreclosures page; no explicit excess proceeds text confirmed yet. | not yet verified |
| Walla Walla Countyverified 2026-07-21Walla Walla County - Treasurer foreclosure page (excess funds). | |
| Whatcom Countyverified 2026-07-21Whatcom County - Tax-Title and Surplus Sales page. | |
| Whitman Countyverified 2026-07-21Whitman County - Tax Foreclosure page (surplus, excess proceeds). | |
| Yakima Countyverified 2026-07-21Yakima County - Application for Tax Foreclosure Surplus Proceeds (PDF). |