Assessor's Office

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Assessor's Office

Assessor: David M. Thomas

Mission Statement
Our mission is to serve the citizens of Skagit County by striving for the highest level in equity of assessment, efficiency of operation, and professionalism of our staff.


The 2020 assessed valuations for taxes payable in 2021 have been certified and posted on the county website. In most areas of the county, residential values have increased from last year. Because our local economy has suffered dramatically from the COVID 19 pandemic, there may be confusion about increasing assessed values during an economic crisis. To improve understanding on how this can occur, I have listed key points pertaining to property assessment and taxation.

  1. The effective date of value each assessment year is January 1 for taxes payable the following year. The sales period used to establish market value indicators is May 1 of the prior year through April 30 of the assessment year. During this time, market sales for 2020 assessments indicated increasing values from the prior year.
  2. The key element to measure market value for assessment purposes is the assessment to sales price ratio. A ratio study performed each year compares the prior year ratio after certification of values to the current year ratio before any adjustments are applied. If that study results in a lower ratio, it indicates market values are increasing. If the result is a higher ratio, it indicates values are declining.
  3. The county real property ratio for 2019 was 92.4 percent. The preliminary ratio for 2020 prior to value adjustments was 85.7 percent. After adjustment and certification of values, the county ratio is 91.6 percent.
  4. Taxes for 2021 collection will be determined later in the year after tax districts complete their budget process. In most cases those budgets are restricted to a one percent increase from the prior year. In other cases voters approve a higher amount. Those budget amounts are set independent of values and except for the State School Levy Part 2, do not increase because values increase.
  5. Distribution of property tax is most equitable when assessed values reflect the market as of the effective date of assessment. It creates the level playing field whether values are trending up or down.  

Mount Vernon property inspections to begin in August, 2020
All properties in the Mount Vernon School District are being revalued for the 2021 assessment year. Appraisers from the Assessor’s Office will inspect all commercial, farm and residential properties in the district. With the exception of properties issued building permits in the six years since, the last inspections for this area occurred in 2015.

In consideration of the COVID 19 environment, the majority of inspections will be limited to what can be observed from the street. Unless appraisers have questions about the property, our policy of announcing our presence by knocking on the front door is suspended. For properties that need verification of characteristics, we will knock then retreat to a safe distance. In those instances there will be a brief exterior walk-around of structures. In all cases new photos are taken. Appraisers will have face coverings, gloves and wear distinctive vests with Skagit County on the back and carry county identification cards. They drive white vehicles with the Skagit County emblem on the side. If you have questions or concerns, please contact the Assessor’s Office at 360 416-1780.

Senior Citizen and Disabled Persons property tax exemption

The Senior Citizen and Disabled Persons property tax exemption helps reduce your property tax liability. The qualifying criteria for the program is based on your age and/or disability, residency and income. [more]

Information On Property Tax Procedures: 2020

About the Assessor's Office

The assessor acts as an agent for the Washington State Department of Revenue and is responsible for administering the property tax system for the county. This process involves establishing real and personal property values for distributing taxes for each tax district, as well as reviewing each tax district’s budget request to assure all legal requirements and limitations are met. The assessor also administers and monitors compliance for recipients of tax benefit programs, such as the Senior Citizen and Disabled Exemption program and the various Current Use programs for properties used for agriculture, timber and open space.

imapThis web site has been prepared to answer questions you might have about the property tax system in Skagit County. There are no unique rules or R.C.W.'s in Skagit County.

The property tax system is designed to treat all taxpayers equally across the State of Washington. My office works hard to treat everyone fairly and promptly. In these pages you will find a group of commonly asked questions about revaluations, the Board of Equalization, values, levies, and an assortment of useful information.

I welcome any comments or suggestions you may offer for improving this website to better serve the needs of the users and citizens of Skagit County.


David M. Thomas

Skagit County Assessor

Assessor Sales Data.
This tool will enable you to search valid sales dating back three years and is illustrated by a colored legend to associate the year of the sale. This tool is built into Imap and you can select other layers or views if you prefer. The details for a selected parcel will appear in a new window.
You can view the Sales Data iMap layer here.

Assessor: Dave Thomas

Office Hours: 8:30 to 4:30 Mon - Fri
700 South 2nd Street, Room 204
Mount Vernon, WA 98273

Phone: (360) 416-1780
FAX: (360) 416-1790

Dave Thomas
Assessor: Dave Thomas