BTA Orders Revised Valuations in Multiple Washington Counties
PUBLISHED Jun 8, 2026, 2:07 PM ET
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Washington state: This week the Washington Board of Tax Appeals set aside several county Boards of Equalization determinations and ordered revised property valuations for cases in King County and San Juan County, including a Seattle multi-tenant office building and residential parcels encumbered by native growth protection easements, applying comparable-sales analysis and vacancy assumptions to adjust assessed market values. King County and San Juan County tax officials must incorporate the Board's findings into assessments this tax cycle, and the BTA's orders reduced values where easements or unsupported vacancy rates distorted comparability; the Board applied a 22 percent vacancy rate in the Seattle office case and prioritized the most comparable sale with fewest adjustments when determining fair market value.
By Sarah Whitman | JQJO News
Timeline of Events
- County assessors established initial property valuations based on sales-comparison and income approaches.
- Property owners appealed assessments to county Boards of Equalization and presented appraisals and broker opinions.
- County Boards of Equalization reviewed and, in some cases, sustained assessor valuations.
- Owners appealed to the Washington Board of Tax Appeals, challenging comparability, vacancy assumptions, and easement impacts.
- The BTA issued decisions setting aside county determinations and ordered reduced or revised valuations using comparable-sales and vacancy-rate analyses.
News Intelligence
- If you own property in King or San Juan County, your tax bill could change. The Washington Board of Tax Appeals' new orders may lower some property values. This could mean lower property taxes for you. Check your next assessment carefully.
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Property owners in the appealed cases benefited from reduced assessed valuations where easements or elevated vacancy assumptions lowered market value estimates, creating potential reductions in property tax liabilities for those parcels.
County assessors and local taxing jurisdictions faced adjustments to previously assessed bases and potential shortfalls in projected tax revenue due to the Board of Tax Appeals' revised valuations.
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BTA Orders Revised Valuations in Multiple Washington Counties
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