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Island County > Assessor's Department
IslandCounty Assessor


April 8, 2020

In compliance with Governor Inslee's extension of his "Stay at Home, Stay Healthy" proclamation, the Island County Assessor's Office will remain closed until further notice.

If you have an urgent matter you may leave a message by calling 360-678-7865 or urgent emails sent to AssessorEmail@islandcountywa.gov.

We will be checking these frequently and will get back to you as soon as we can.


With respect to the Public Records Act, in person review or copying of records and the 5 day response time are suspended and waived through April 23, 2020.

Levy Rates have been Certified

January 15, 2020

In addition to determining the value of real and personal property for tax purposes, the assessor calculates and certifies levy rates for most taxing districts, assuring that the limits to the levy rates are not exceeded.  The assessor compiles an assessment roll showing the assessed value of all taxable property and a tax roll indicating the amount of levies that are due from each owner and presents this to the county treasurer.  

The county treasurer prepares the annual statement of taxes due and sends it to owners in mid-February.  Owners must pay at least one-half of the tax by April 30 and the remainder by October 31.  The treasurer receives the payments and distributes the funds to the accounts of the appropriate taxing districts.

Revaluation has Begun

September 2019 through March 2020 The Island County Assessor's Office will be visiting properties in and around the Freeland and Greenbank areas. You can expect to see one of our appraisal staff at your property during this time.

Visits are required by state law RCW 84.40.04. Appraisers are identifiable by their badge, the emblem on the county car and/or outerwear with "ASSESSOR" visible on the jacket or vest. Our visit will allow us to update our records with you or by visual observation if you are not home. We visit 9,000 parcels annually and are unable to schedule visits.

Mary Engle

Island County Assessor


Island County Assessor

As your Assessor, one of my functions is to have this office be transparent and accessible to you. This web section will provide you with information and assistance on questions you may have regarding the Assessor’s office. If you have any other questions or concerns that are not addressed here, please contact me.

It is our goal to appraise all property fairly and equitably, to maintain accurate and accessible property records and give prompt and courteous customer service.

State law requires that the Assessor value property at 100% of true and fair market value. The market value is determined by the property owners who are buying and selling real estate in the market place. Finding the market value of your property means discovering the price most people would pay for your property.

What We Do

The Island County Assessor’s office is required to physically inspect, appraise and revalue all real property once every 6 years with an annual review and update based on sales analysis.

This appraisal cycle is established by the state constitution & state laws, enforced by the State Department of Revenue

In order to do our job we:

  • Maintain inventory, description, ownership, sales and mapping for all properties
  • Provide information, education and assistance
  • Provide public computer access to assessment data, also now available on the Internet through the Real Property Search.
  • Allocate value to taxing districts, calculate levy rates and certify tax roll to Treasurer
  • Administer and provide information for tax exemptions:
    • Senior citizen and disabled persons exemption
    • Open space taxation, forest land exemption, farm & agricultural exemption
    • Historic properties exemption
    • Residential home improvement exemption
  • Prepares defense of valuations for appeal boards
  • Maintain business personal property listings and audits

What We Don’t Do

We don’t mail or collect your taxes! The County Treasurer does this, contact them at 360-679-7302

We don’t take your appeal! The Board of Equalization does this, contact them at 360-679-7379


Please feel free to contact me at anytime.
The Assessor’s staff is always willing to answer your questions!

Mary Engle
Island County Assessor​

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