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Assessor's Office


Cindy Portmann Assessor
425 388-3433
Snohomish County Washington
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Did you Know?
Cindy Portmann Assessor
Typically 42% - 47% of all property taxes that you pay are from voter approved levies. This includes cities, schools, parks, fire districts, and more...


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Washington State has a 'budget-based' property tax system, so the taxing districts budgets and voter approved measures determine how much you pay. Simply put, when values decline levy rates increase, when values increase, levy rates decrease. Click Here to learn more about levies and our property tax system.


In 2010, 33 of the 44 taxing district requests to voters for funding was passed by voters.


The decrease in total residential assessed value county-wide started with the 2008 Jan. 1st assessment and reflected the decline in the market in 2007. This value was used to calculate taxes owing in 2009 according to state law.


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 Important Dates
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January 1 Real and personal property is subject to taxation and valuation for assessment purposes as of this date.
February 15 Property taxes can be paid on or after this date
April 30 Personal property listings due.
April 30 First half taxes due.
May 31 End of revaluation cycle.
June 1 Newly incorporated taxing districts may be established.
July 1 Filing deadline for Board of Equalization appeals.
July 15 Board of Equalization meets in open session.
August 1 Most taxing district boundaries must be established.
August 31 Last day Assessor can add new construction value.
October 1 Last day to file for exemption on historic property.
October 2 County begins budget hearings.
October 31 Second half property tax due.
November 15 Last day for taxing district to file levy requirements with Assessor.
November 30 Last day for districts to certify to the Assessor amount of taxes to be collected for district purposes.
December 31 Deadline for open space assessment applications.