Property Tax Appeal — Mercer Island, King County
Mercer Island has 7,237 residential properties in the King County assessment roll. Recent comparable sales average $3,088,813. If your assessed value is higher than what similar homes are selling for, you may be overpaying property taxes.
Check Your Mercer Island Property
Enter your address to instantly compare your assessment to recent sales in Mercer Island.
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Mercer Island Property Stats
Recent Sales in Mercer Island
These numbers are based on arm's-length residential sales in King County records. Your specific property may differ — run a free check above for personalized comps.
ZIP Codes in Mercer Island
How to Appeal Property Taxes in Mercer Island
Property tax appeals in Mercer Island follow the same King County process. You have until July 1 each year to file with the Board of Equalization. The key to a successful appeal is strong comparable sales evidence — homes similar to yours that sold for less than your assessed value. Our tool finds those comps automatically and generates professional appeal documents you can file in about 10 minutes.