Snohomish County Property Tax Appeal — Washington

Rob Hartley·Updated February 15, 2026

The median property tax in Snohomish County, Washington is $3,009 per year for a home worth the median value of $338,600. Snohomish County collects, on average, 0.89% of a property's assessed fair market value as property tax. Snohomish County has one of the highest median property taxes in the United States, and is ranked 155th of the 3143 counties in order of median property taxes. Snohomish County showcases a range of property tax bills, with Woodway having the highest median tax bill at $13,365, significantly above the national median property tax bill of $2,400. The county seat is Everett, and the county encompasses major population centers including Marysville, Edmonds, Lynnwood, and Mukilteo.

Notable cities: Everett, Marysville, Edmonds, Lynnwood, Mukilteo, Lake Stevens, Mill Creek

Median Home

$668,100

Tax Rate

0.89%

Annual Tax

$5,535

Population

850,000

2026 Appeal Deadline: July 1st or within 60 days of when the change of value notice was mailed, whichever is later

Petitions must be received by the board on or before July 1 of the assessment year or within 60 calendar days after the date of the value change notice (or other notice of determination) - whichever date is later (WAC 458-14-056(2).

Property in Snohomish County, Washington — local tax assessment and appeal guide

How Snohomish County Assesses Property

100%of market value

Assessed by: Snohomish County Assessor

Assessment cycle: annual

Notices typically mailed: June

Washington State law requires assessors to appraise property at 100% of its "true and fair market value" in money according to the "highest and best use" of the property. If your home's market value is $668,100, at Washington's 100% assessment ratio your assessed value would be $668,100, resulting in approximately $5,947 in annual taxes at the county's effective rate of 0.89%.

The Appeal Process

Appeals are heard by the County Board of Equalization. The board's goal is to provide an impartial hearing environment that protects each party's due process rights and results in a fair decision. All hearings are being held remotely - anyone may attend by Zoom or by telephone.

Step 1: Call the Assessor's Office phone number listed on your change of value notice and ask to talk to an appraiser to discuss your concerns

Step 2: If you cannot come to an agreement, the appraiser will explain how to appeal with the Snohomish County Board of Equalization (BOE)

Step 3: File an original completed petition form with the board - submit separate petitions for each parcel

Step 4: Include specific reasons why you believe the assessor's value does not reflect the true and fair market value of your property with sufficient information to apprise the board

Step 5: The Assessor will review your petition and may contact you - a hearing will be scheduled before the Board of Equalization if necessary

Step 6: If you disagree with the BOE decision, you may appeal to the state board within 30 calendar days of the mailing date of the board's decision

Required form: Petition form available from the clerk of the board at(425) 388-3407

Filing Methods

online:Use the webform located on the BOE site for electronic filing

mail:Submit by mail, must be postmarked by the post office no later than the filing deadline

in-person:Personal delivery is available

Evidence to Bring

Evidence demonstrating that the assessor's valuation exceeds your property's fair market valueComparable salesBids or estimates for needed repairsDevelopment restriction or easement documentation

Snohomish County Assessor Contact

Snohomish County Assessor

Phone: (425) 388-3433

Address: 3000 Rockefeller Ave M/S 510, Everett WA 98201

Website: https://www.snohomishcountywa.gov/assessor

Hours: Monday - Friday, 9 a.m. - 5 p.m. The office is closed on holidays.

Tax Exemptions in Snohomish County

Senior Citizens/People with Disabilities Exemption

Up to $75,000 disposable income threshold

Property tax exemption program for qualified seniors and disabled persons

Eligibility: At least 57 years of age, surviving spouse/domestic partner of a participant, unable to work due to disability, or disabled veteran with 80% service-connected evaluationDeadline: Claims are due to Property Tax Division

Disabled Veteran Exemption

For veterans with at least 80% service-connected evaluation or receiving 100% compensation

Exemption for disabled veterans with service-connected disabilities

Eligibility: Disabled veteran with a service-connected evaluation of at least 80% or receiving compensation from the United States Department of Veterans Affairs at the 100% rateDeadline: Contact Assessor's office

Property Tax Deferral

Defers property taxes until property is sold or owner passes away

Deferral program for qualified property owners

Eligibility: Limited income applicantsDeadline: September 1

Official Resources

Snohomish County Assessor Website →

Official county assessor website with property information, exemption forms, and assessment tools.

Snohomish County Board of Equalization →

Information about the appeal process, hearing procedures, and petition forms.

Washington Department of Revenue Property Tax →

State-level property tax information, regulations, and oversight resources.

Snohomish County Property Tax Payment Portal →

Online portal to view and pay property tax bills for Snohomish County properties.

Check Your Snohomish County Assessment

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Snohomish County?

In Snohomish County, you must file a completed petition with the Board of Equalization within 60 days of when the change of value notice was mailed or by July 1st, whichever is later. If submitted by mail, petitions must be postmarked by the post office no later than the filing deadline. Appeal forms are available from the clerk of the board at(425) 388-3407. Under very limited conditions, late petitions or appeals for previous assessment years may be accepted.

How do I file a property tax appeal in Snohomish County online?

The Board of Equalization has updated their filing procedures - evidence submissions and hearing confirmations will no longer be accepted by email. Instead, you must use the webform located on the BOE website for electronic filing. Mailing and personal delivery are still available options. There is no charge for filing an appeal. You must file an original completed petition form and submit separate petitions for each parcel.

What is the senior property tax exemption worth in Snohomish County?

For the 2027 property tax year, the disposable income threshold for Snohomish County residents participating in the Senior Citizens/People with Disabilities Exemption program is $75,000. Participants are required to reside in their principle residence located in this county for 6 months per calendar year in order to qualify for 2026 tax relief. To qualify, you must be at least 57 years of age, be the surviving spouse or domestic partner of a person who was an exemption participant at the time of their death, or be unable to work because of a disability. Applications and program information are available on the Snohomish County Assessor's website.

What happens at a Board of Equalization hearing in Snohomish County?

The Board of Equalization is an independent body organized to hear appeals, comprised of five citizen members appointed by the County Council. The board's goal is to provide an impartial hearing environment that protects each party's due process rights and results in a fair decision. All hearings are currently being held remotely, and anyone may attend by Zoom or by telephone. By state law, you must overcome the Assessor's assessed value by providing clear, cogent, and convincing evidence that a different valuation is justified. The BOE can consider market-based information including comparable sales, bids or estimates for needed repairs, and development restriction documentation.

How much can I save by appealing my property taxes in Snohomish County?

Statistics show that about 25% of homes in America are unfairly overassessed, and pay an average of $1,346 too much in property taxes every year. If your appeal is successful, your property will be reassessed at a lower valuation and your Snohomish County property taxes will be lowered accordingly. If the board decreases your property value, the assessor's records will be adjusted, and the treasurer's office will either send a revised tax statement if the decision occurs before October 31 of the tax year, or issue a refund if your full year's taxes have already been paid. The actual savings depend on how much your property was overassessed.

What evidence do I need for a Snohomish County property tax appeal?

The appeal process does not require an attorney, but you will need to present evidence that the assessor's value is incorrect. You must provide clear, cogent, and convincing evidence that a different valuation is justified. The BOE can consider market-based information including comparable sales, bids or estimates for needed repairs, and development restriction or easement documentation. Sales of the subject property and/or comparable properties are the foundation of our state's market value standard and typically provide the best indicators of market value. The best comparables are sales located in your neighborhood, with similar land and improvement features, which sold close to the valuation date at issue.

When are property tax assessment notices mailed in Snohomish County?

Snohomish County updates all taxable real and personal property assessed values annually as of January 1 of each year. The Official Notice Of Assessed Value will be mailed for most properties in June of that year. The deadline for appealing the 2026 Official Notices of Assessed Value mailed on June 27, 2026 has passed. In Snohomish County, assessment notices are sent in the spring each year, typically reaching your mailbox by the middle of May. After receiving your notice, you have 60 days to file an appeal if you disagree with the assessed value.

What is the average property tax rate in Snohomish County compared to other Washington counties?

The median property tax in Snohomish County is $3,009 per year for a home worth the median value of $338,600. Snohomish County collects, on average, 0.89% of a property's assessed fair market value as property tax. Snohomish County has one of the highest median property taxes in the United States, and is ranked 155th of the 3143 counties nationwide. King County collects the highest property tax in Washington, levying an average of $3,572.00 (0.88% of median home value) yearly in property taxes, while Ferry County has the lowest property tax in the state. The typical levy rate in 2026 was $8.2776 per thousand dollars of assessed value, while the 2026 typical levy rate decreased to $8.1949.

For state-wide appeal information including Washington's assessment ratio and deadlines, see our Washington Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Washington Counties

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← All Washington property tax appeal info

Sources: https://snohomishcountywa.gov/Faq.aspx?QID=257 | https://www.tax-rates.org/washington/snohomish_county_property_tax | https://www.ownwell.com/trends/washington/snohomish-county | https://snohomishcountywa.gov/134/Board-of-Equalization | https://snohomishcountywa.gov/m/newsflash/Home/Detail/3162

Last verified: 2026-02-15