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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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Property Segregation Forms and Publications
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Property Segregation Request Form

The Segregation Request Form can be used to request a segregation of property based on documents of record, combinations of multiple parcels or corrections to legal descriptions.

Legal Description Abbreviations Publication

The Legal Description Abbreviations Publication provides a comprehensive list of standard abbreviations used in legal descriptions in the Assessor's database.

Plat Listings

Snohomish County assigns a sequential number to each new formal plat or condominium plat for the purpose of assigning parcel numbers to real property parcels created by these subdivisions. Three listings are available for referencing this information.

The New Plat Listing contains information on plat number, plat name, parent parcel number and recording number and location by section, township and range.

The Full Plat Listing by Name contains information on plat number, plat name and location by section, township and range. It is sorted by the plat name. There is also an alternate plat listing by name compiled from our GIS that includes the recording number.

The Full Plat Listing by Number contains information on plat number, plat name and location by section, township and range. It is sorted by the plat number.