Snohomish Property Tax: Rates, Deadlines & Appeals (2026)

The 2026 Snohomish County property assessment appeal deadline is Tuesday, August 25, 2026, at 4:00 p.m. This is for the 2026 assessed value used for taxes payable in 2027; file with the Snohomish County Board of Equalization (BOE) online through the BOE page, by mail, or in person at 3000 Rockefeller Avenue, M/S 409, Everett, WA 98201. There is no filing fee, and emailed petitions are rejected during the June-August appeal window.

How assessments work in Snohomish

Snohomish County reassesses real property annually. The 2026 notices were mailed June 26, 2026, and the value is the county’s estimate of what your property could have sold for on January 1, 2026. Those 2026 values are used to calculate 2027 property taxes. For new construction, the assessment date is July 31 for taxes collected the following year.

The Assessor is required to value taxable property at 100% of true and fair market value, not at a capped percentage of value and not simply by applying last year’s increase. For the 2026 notice cycle, Snohomish said the 2025 market produced little overall change: residential total value decreased 1.62%, commercial total value increased 1.49%, and total value decreased 0.98% countywide. Market areas varied, from Edmonds down 2.28% to Sultan up 2.38%.

Do not confuse the Official Notice of Assessed Value with your February tax bill. The notice is about next year’s taxable value. Tax statements are generally mailed in February; first-half taxes are due April 30 and second-half taxes are due October 31.

Whether you should appeal

Appeal only if you can show the market value was wrong as of January 1, 2026. The BOE cannot lower your value because your taxes are unaffordable, your assessment rose by a large percentage, or a neighbor’s assessed value looks lower. Snohomish’s BOE specifically says it can consider market-based evidence such as comparable sales, repair bids, development restrictions, easements, and appraisals.

Start with three local checks:

1. Check your property record. Look for wrong square footage, finished basement area, lot size, view/waterfront status, condition, quality/grade, or a building that is gone. A factual error is often the cleanest appeal.
2. Look for sales from 2025 near January 1, 2026. The county’s Sales Comparison Worksheet says the best evidence is a minimum of three comparable sales similar to your property and close to the assessment date. Use closed sales, not listings.
3. Call the Assessor before filing if the issue is obvious. Snohomish encourages homeowners to talk with Residential Appraisal at 425-388-6555 before appealing; some errors can be resolved without a hearing.

Published success rates or median reductions were not available in the official county materials I found. The BOE does publish one useful workload number: for the 2025 assessment year, it received approximately 1,400 appeals, and most appeals are resolved within 12-18 months.

A realistic savings estimate: suppose your 2026 notice says $740,000, but three strong 2025 comparable sales support $660,000. That is an $80,000 reduction. Snohomish’s actual 2026 typical levy rate was $8.1949 per $1,000 of assessed value. Using that rate as a working estimate, the potential tax savings would be $80,000 ÷ 1,000 × $8.1949 = about $656. Your real 2027 savings will depend on your tax code area and 2027 levy rates, which are not final when the 2026 appeal is filed.

Step-by-step how to file

1. Use the right form. For a house, condo, or residential land, use “Taxpayer Petition to the County Board of Equalization for Review of Real Property Valuation Determination,” REV 64 0075. Snohomish also provides a Sales Comparison Worksheet, Agent Authorization form if someone represents you, and Late Filing Exception Request Form for limited good-cause situations.

2. Meet the deadline. Washington’s rule is July 1 of the assessment year or 60 days after the notice was mailed, whichever is later, because Snohomish uses the extended 60-day deadline. Since notices were mailed June 26, 2026, the county’s concrete deadline is August 25, 2026, at 4:00 p.m. Online petitions must be timestamped by 4:00 p.m.; mailed petitions must be postmarked by August 25; hand-delivered petitions must arrive by 4:00 p.m.

3. Include the required items. A complete petition needs the parcel number, owner name and mailing address, property description, the Assessor’s value, your requested value, specific market-value reasons, your signature and date, and a copy of the Official Notice of Value if filing after July 1.

4. File by one of Snohomish’s accepted methods.

• Online: use the electronic petition button on the BOE page at https://snohomishcountywa.gov/134/Board-of-Equalization.
• Mail: Board of Equalization, 3000 Rockefeller Avenue, M/S 409, Everett, WA 98201. Keep proof of postmark.
• In person: Admin West building, 1st Floor, 3000 Rockefeller Avenue, M/S 409, Everett, WA 98201. BOE office hours are Monday-Friday, 8:30 a.m.-4:00 p.m., excluding holidays.
• Email: not accepted for petitions during the June-August appeal window. Snohomish warns emailed petitions will be rejected.

There is no charge to file an appeal.

What happens after

After you file, the Assessor’s representative reviews the petition and may contact you. If you and the Assessor agree on a value, you may sign a stipulated agreement and avoid a BOE hearing. If not, the BOE schedules a hearing and sends notice by mail, generally around 60 days before the hearing.

Evidence is strict. Additional evidence must be provided to both the BOE and the Assessor no later than 21 business days before the hearing. Snohomish limits evidence to a single PDF/Word document or paper packet of 75 pages maximum. Do not submit links, videos, or unsupported screenshots. The BOE evidence portal is for the BOE copy only; you must separately provide a copy to the Assessor, commonly by email to contact.assessor@snoco.org, mail, or hand delivery.

Hearings are currently remote. The Board’s proper name is the Snohomish County Board of Equalization, an independent citizen board appointed by the County Council. Hearings are held by Zoom or telephone, are recorded, and testimony is under oath. The Board uses two tracks: a full hearing with oral argument, or an administrative/non-oral review. If you do not confirm your hearing by the 21-business-day deadline, your case can be moved to an administrative schedule and decided on the file without your oral presentation.

At a full hearing, the homeowner presents first, the Assessor responds, both sides may ask questions, board members may ask questions, and each side may close. Snohomish’s hearing overview says hearings are short, often about 15-20 minutes. The BOE rules require written decisions within 45 calendar days of the hearing; county FAQs say decisions are typically mailed within four to six weeks. Either side may appeal to the Washington State Board of Tax Appeals within 30 calendar days after the BOE decision is mailed.

Local tips

Snohomish is a market-value appeal county, so build the file like a mini appraisal. The most persuasive packet is usually: your notice, property record corrections, three to five 2025 comparable sales near your neighborhood, a short adjustment explanation, photos only if they prove a specific condition issue, and repair bids for major defects. The county’s worksheet says not to use assessed values, percentage changes, listing prices, newspaper articles, or hardship arguments.

Check exemptions separately from appeals. Washington does not have a general annual “homestead exemption” that automatically reduces every owner-occupied home’s property tax bill. Snohomish homeowners should instead check the Assessor’s Property Tax Exemptions page for Senior Citizens and People with Disabilities, senior/disabled deferral, limited-income deferral, open space/current use, designated forest land, historic property special valuation, the 30% home improvement exemption, and destroyed-property relief.

For 2026 taxes, Snohomish’s senior/disabled exemption income threshold is $75,000 and the home generally must be your principal residence for more than six months in the qualifying year. For 2027-2029, the state-published Snohomish thresholds rise, with Threshold 3 at $91,000 and a deferral threshold of $101,355. If you are appealing value and may qualify for relief, do both tracks: file the BOE appeal for market value and contact the Exemption Division at 425-388-3540 for tax relief eligibility.

Snohomish Property Tax Rate

For tax year 2026, Snohomish property-tax rates are not a single countywide rate; the Snohomish County Assessor publishes rates by Tax Code Area (TCA), expressed in dollars per $1,000 of assessed value. For properties inside the City of Snohomish, the 2026 city levy rate is $0.49870766917 per $1,000 of assessed value; the total TCA rate varies by parcel (for example, TCA 00735/00736 total rate is $9.77705341755 per $1,000, while TCA 00740 total rate is $8.27705341755 per $1,000).

Source: https://www.snohomishcountywa.gov/DocumentCenter/View/142088/2026-Annual-Report

When Are Property Taxes Due in Snohomish?

First-half property taxes are due April 30; second-half property taxes are due October 31. Taxes are payable in two halves: first half by April 30 and second half by October 31.

This is not the same as the assessment appeal deadline above. The appeal deadline is your window to contest your assessed value; the payment due date is when the resulting tax bill must be paid. Missing one does not affect the other, but missing either has real consequences — one forfeits your right to appeal for the year, the other can trigger penalties and interest.

Source: https://www.snohomishcountywa.gov/214/General-Tax-Information

Property Tax Exemptions in Snohomish

• Senior Citizens and People with Disabilities Property Tax Exemption — For taxes due in 2026, the applicant must own and occupy the residence, have met the age/disability requirement in 2025 (61 or older by December 31, 2025; unable to work because of disability; veteran with 80% or higher service-connected disability; or qualifying surviving spouse/domestic partner at least 57), and have 2025 combined disposable income after allowed deductions of $75,000 or less.. Reduces property taxes and does not have to be repaid. For 2026: income $0-$54,000 receives exemption from excess levies and Part 2 of the state school levy plus a reduction of assessed value of 60% or $60,000, whichever is greater; $54,001-$64,000 receives exemption from excess levies and Part 2 of the state school levy plus a reduction of assessed value of 35% or $50,000, whichever is greater, not to exceed $70,000; $64,001-$75,000 receives exemption from excess levies and Part 2 of the state school levy. Yes, application with required income/expense and identification documentation; renewals/status handled by the Assessor Exemption Department. Apply by For 2026 taxes, eligibility for refund expires 2029-10-31.. (Source: https://www.snohomishcountywa.gov/DocumentCenter/View/113022)
• Senior Citizens and People with Disabilities Property Tax Deferral — Homeowners who are at least 60 by December 31 of the application year, unable to work because of disability, or a qualifying surviving spouse/domestic partner/heir/devisee; must own and occupy the home and meet the county deferral income threshold. Snohomish County’s 2024-2026 deferral threshold is $79,578.. Postpones/defer payment of property taxes and/or special assessments for the residence; Washington Department of Revenue pays the taxes on the owner’s behalf, and the deferred amount plus interest is repaid when a triggering event occurs. If otherwise qualified and properly insured, taxes and special assessments may be deferred up to 80% of equity. Yes, apply through the county assessor; renew annually. Apply by Apply at least 30 days before the tax or special assessment is due; the assessor may accept late applications.. (Source: https://www.snohomishcountywa.gov/DocumentCenter/View/1385)
• Property Tax Deferral for Homeowners with Limited Income — Homeowners with combined disposable income of $57,000 or less who have owned the home at least five years, occupy it as a primary residence for more than six months in the prior calendar year, have sufficient equity, and pay the first half of the property tax before applying to defer the second half.. Defers one-half of the property taxes and/or special assessments owed for the residence; Washington Department of Revenue pays one-half of the annual property taxes on the owner’s behalf, with repayment plus interest due when a triggering event occurs. With qualifying insurance, taxes and special assessments may be deferred up to 40% of equity. Yes, apply through the county assessor; renew annually. Apply by September 1. (Source: https://www.snohomishcountywa.gov/DocumentCenter/View/1372)
• Property Tax Assistance Program for Widows or Widowers of Veterans — A widow or widower of a qualifying veteran who meets state requirements, including not remarried, at least 62 by December 31 of the tax year or retired from regular gainful employment because of disability, and meeting the state income limit for the program.. Grant assistance for payment of property taxes; the assistance amount is based on the applicant’s income, residence value, and local levy rates, and does not have to be repaid if the applicant continues to live in the residence until at least December 15 in the year a grant is received. Yes, annual renewal; file the state claim form and combined disposable income worksheet. (Source: https://dor.wa.gov/taxes-rates/property-tax/property-tax-exemptions-and-deferrals)
• Exemption for Physical Improvement to a Single Family Dwelling — An owner making a qualifying physical improvement to an existing single-family dwelling; the claim must be filed with the county assessor before the improvements are completed, and the same dwelling may not receive the exemption more than once in a five-year period.. Three-year property tax exemption for the qualifying improvement value, limited to improvements totaling 30% or less of the dwelling’s value before the improvement. Yes, file with the assessor before completion of the improvements. Apply by Before the improvements are completed.. (Source: https://dor.wa.gov/sites/default/files/2022-02/64-0009.pdf)

How to Look Up Your Property Record in Snohomish

You can look up your property's official record at https://wa-snohomish.publicaccessnow.com/PropertyInformation/PropertySearch.aspx. The official Assessor Property Search/SCOPI tools can be used by parcel or address to view property values; SCOPI also shows parcel ID, property address, owner name, market value, Tax Code Area number, and links to detailed property account information such as sales history, property tax history, legal descriptions, and structure data.