AppealDesk

Clark County Property Tax Appeal, Washington

Travis BunnTravis Bunn·Updated July 24, 2026

Watch: How to appeal your property taxes in Clark County

Clark County is located in southwestern Washington along the Columbia River, directly north of Portland, Oregon. With a 2026 population of approximately 538,000, it is Washington's fifth-most populous county. The county seat and largest city is Vancouver, with other notable cities including Camas, Battle Ground, Washougal, and Ridgefield. Property tax appeals are particularly important in Clark County given that the median annual tax bill of $4,274 is significantly higher than the national median of $2,400, and the county's effective tax rate of 0.92% exceeds both the state average of 0.88% and places Clark County among the highest-taxed counties in Washington.

Notable cities: Vancouver, Camas, Battle Ground, Washougal, Ridgefield

Median Home

$479,858

Tax Rate

0.92%

Annual Tax

$4,274

Population

538,000

On the typical Clark County home, valued near $479,858 at the county’s effective tax rate of 0.92%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: July 1, 2026 or 60 calendar days from the date your Notice of Value was mailed, whichever is later

This year's appeal window has passed in most of Washington. Order now and we re-run your numbers free when the window reopens, so your evidence is ready the day your next notice lands.

Property owners can file a preemptive appeal between January 1 and July 1 of the assessment year even without receiving a Notice of Value. If you receive a Notice of Value from the Assessor's Office, you have 60 calendar days (not two months) from the mailing date on that notice to file an appeal. The appeal must be received by the Board of Equalization office or postmarked within this timeframe. Late appeals cannot be accepted under RCW 84.40.038.

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Washington craftsman home among evergreens. Clark County appeal guide.

How Clark County Assesses Property

100%of market value

Assessed by: Clark County Assessor's Office

Assessment cycle: annual

Notices typically mailed: June-September

In Washington State, properties are assessed at 100% of their true and fair market value, meaning your assessed value equals your property's market value. Clark County conducts annual assessments, physically inspecting one-sixth of residential properties each year while evaluating all properties based on the previous year's sales data. For example, if your home's market value is $479,858 (Clark County's median), at Washington's 100% assessment ratio your assessed value would be $479,858, resulting in approximately $4,415 in annual taxes at the county's effective rate of 0.92%.

The Appeal Process

Appeals are heard by the County Board of Equalization. The hearing is an informal 15-minute review conducted by three citizen board members appointed by the Clark County Council. You present your evidence to support your claim that your property is overvalued, and the Assessor's Office may also present their position. The process is free, and you can represent yourself without hiring an attorney.

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Step 1: Contact the Clark County Assessor's Office at (564) 397-2391 to discuss your property valuation concerns and request an informal review of your assessment before filing a formal appeal.

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Step 2: Gather supporting evidence including comparable sales data from similar properties that sold for less than your assessed value, recent independent appraisals (within 1-2 years), photos documenting property condition issues, repair estimates or contractor bids, and evidence of property defects or inability to develop.

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Step 3: Complete the Appeal/Petition Form to the Board of Equalization and attach a copy of your Notice of Value. The form is available online at clark.wa.gov/board-of-equalization or by calling (564) 397-2337.

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Step 4: Submit your completed appeal form with all supporting evidence before the deadline (July 1 or 60 days from Notice of Value date) via the online portal, email to BOE@clark.wa.gov, mail to PO Box 5000 Vancouver WA 98666-5000, or in-person by appointment.

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Step 5: Additional evidence must be provided to both the Board of Equalization office and the Assessor's Office no later than 21 business days prior to your scheduled hearing date.

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Step 6: Attend your scheduled hearing before the three-member County Board of Equalization. The hearing is an informal 15-minute review where you present your evidence. You may represent yourself without an attorney, and attendance is not required as submitted evidence will still be considered.

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Step 7: Receive the Board's written decision within 30 days of your hearing. The board can raise, lower, or sustain the Assessor's value. Changes to your assessment will be entered by the Assessor's Office and the Treasurer's Office will notify you of tax adjustments.

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Step 8: If unsatisfied with the County Board of Equalization's decision, you may appeal to the Washington State Board of Tax Appeals by filing Form BTA100 within 30 calendar days of the County board's decision mailing date.

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Step 9: As a final option, you may pay your taxes under protest and petition Superior Court for a refund by filing a lawsuit under RCW Chapter 84.68.

Required form: Appeal/Petition Form to the Board of Equalization

Filing Methods

online:Submit through the Clark County Real Property Valuation Appeal Portal at clark.wa.gov/board-of-equalization
email:BOE@clark.wa.gov
mail:Board of Equalization, PO Box 5000, Vancouver, WA 98666-5000
in-person:Public Service Center, 1300 Franklin Street, Suite 650, Vancouver, WA 98660 (appointment required)

Evidence to Bring

Comparable sales data from similar propertiesRecent independent property appraisalPhotos documenting property condition issuesRepair estimates or contractor bidsEvidence of assessment errors (wrong square footage, features, or lot size)

Clark County Assessor Contact

Clark County Assessor's Office

Phone: (564) 397-2391

Address: Public Service Center, 1300 Franklin Street, 2nd Floor, Vancouver, WA 98660

Website: https://clark.wa.gov/assessor

Online Portal: https://clark.wa.gov/board-of-equalization

Hours: Monday-Thursday 9:00 AM to 4:00 PM (Joint Lobby walk-ins); Phone hours: 9:00 AM to 4:30 PM

Tax Exemptions in Clark County

Senior Citizens and Persons with Disabilities Property Tax Exemption

Exemption of $60,000 or 60% of assessed value (whichever is greater) for lowest income tier; partial reductions of 35-60% for higher income tiers

This exemption reduces or eliminates property taxes for qualifying senior citizens (age 61+) and persons with disabilities. The program offers tiered benefits based on household income, including exemption from excess levies, reduction in assessed value (35% to 60% depending on income tier), and freezing of assessed value at enrollment.

Eligibility: Must be age 61 or older (or disabled or disabled veteran with 80%+ service-connected disability) by December 31 of the assessment year; own and occupy the residence as primary home for at least 6 months; and meet county-specific combined disposable income thresholds (varies by tier, generally ranging from $40,000 to $84,000 depending on county median income)Deadline: December 31 annually; applications for 2027 taxes become available February 9, 2026

Disabled Veteran Property Tax Exemption

Up to $60,000 or 60% of assessed value (whichever is greater) for 100% disabled veterans in lowest income tier; tiered reductions based on disability rating from 10-100%

Qualifying disabled veterans with service-connected disabilities receive property tax reductions based on disability rating percentage and household income. Veterans with 80% or higher disability rating who meet income requirements can qualify for the same tiered exemptions as seniors.

Eligibility: Must have service-connected disability rating from VA (80%+ for senior/disabled exemption program, or 10%+ for veteran-specific exemptions enacted in recent legislation); own and occupy primary residence; meet income requirementsDeadline: December 31 of the assessment year

Property Tax Deferral for Seniors and Persons with Disabilities

Can defer up to 80% of the equity in the property

This program allows qualifying seniors (age 60+) and persons with disabilities to defer property taxes as a lien against the property. The deferred amount accrues at 5% simple annual interest and is repaid when the property is sold or transferred. This provides relief for those with higher incomes who don't qualify for the exemption.

Eligibility: Age 60+ or disabled; own and occupy primary residence; combined disposable income generally under $67,000 (higher than exemption threshold); maintain adequate fire and casualty insurance with WA Department of Revenue as loss payeeDeadline: Annual application required; contact Assessor's Office at deferral@clark.wa.gov or (564) 397-2391

Clark County Appeal Statistics

Success Rate

over 50% have favorable outcomes

Clark County Appeal Packet · $49

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Clark County for 2026?
The deadline to file a property tax appeal in Clark County is July 1, 2026, or 60 calendar days from the date your Notice of Value was mailed, whichever is later. If you receive a Notice of Value in June 2026, you have 60 calendar days (not two months) from the mailing date shown on that notice. You can also file a preemptive appeal between January 1 and July 1 without receiving a notice if you believe your property is overvalued. Late appeals cannot be accepted under state law, so it's critical to file before the deadline or you must wait another full year.
How do I file a property tax appeal online in Clark County?
To file your property tax appeal online in Clark County, visit the Board of Equalization's Real Property Valuation Appeal Portal at clark.wa.gov/board-of-equalization. You'll need to complete the Appeal/Petition Form and upload a copy of your Notice of Value along with any supporting evidence such as comparable sales data, photos, or appraisals. You can also submit additional evidence up to 21 business days before your hearing. Alternatively, you can file by emailing BOE@clark.wa.gov, mailing to PO Box 5000 Vancouver WA 98666-5000, or scheduling an in-person appointment by calling (564) 397-2337.
What happens at a Board of Equalization hearing in Clark County?
At a Clark County Board of Equalization hearing, you will have approximately 15 minutes to present your evidence to three citizen board members appointed by the County Council. The hearing is informal, and you can represent yourself without hiring an attorney. You present your evidence showing why your property is overvalued, such as comparable sales data, photos of defects, or a recent appraisal. The Assessor's Office may also present their position. Attendance is not mandatory, if you submit evidence but don't attend, the board will still review your materials. You'll receive a written decision within 30 days, and the board can raise, lower, or sustain your assessed value.
How much can I save by appealing my property taxes in Clark County?
On the typical Clark County home valued at $479,858 with the county's effective tax rate of 0.92%, a successful appeal reducing your assessment by just 10% would save you approximately $441 annually. If your home is overvalued by 15%, the savings jump to about $662 per year. Over 50% of appeals in Clark County result in favorable outcomes. The actual savings depend on how much your property is overassessed and the strength of your evidence. With Clark County's median annual tax bill of $4,274 being significantly higher than the national median, even modest reductions can provide substantial long-term savings that compound year after year.
What evidence do I need for a successful property tax appeal in Clark County?
The most compelling evidence for a Clark County property tax appeal includes recent comparable sales data from 3-5 similar properties in your neighborhood that sold for less than your assessed value, ideally within the past year. A recent independent appraisal (within 1-2 years) from a licensed appraiser carries significant weight. Photos documenting property condition issues, structural defects, or deferred maintenance help demonstrate value reduction. Contractor repair estimates or bids for necessary work also support your case. Additionally, documentation of assessment errors such as incorrect square footage, wrong number of bedrooms, or inaccurate lot size can be decisive. All additional evidence must be submitted to both the Board of Equalization and Assessor's Office at least 21 business days before your hearing.
What is the senior property tax exemption worth in Clark County?
The senior property tax exemption in Clark County can provide savings of hundreds to thousands of dollars annually by exempting $60,000 or 60% of your assessed value (whichever is greater) for those in the lowest income tier, plus exemption from all excess levies. For a home valued at $400,000, this could mean exempting $240,000 from taxation. Partial exemptions of 35-60% are available for higher income tiers. To qualify, you must be at least 61 years old by December 31 of the assessment year, own and occupy your primary residence, and meet county-specific income thresholds. Your assessed value is also frozen at enrollment, protecting you from future increases. Applications for 2027 taxes become available February 9, 2026, and must be filed by December 31, 2026.
Can I appeal my Clark County property taxes if my home value hasn't changed?
Yes, you can file a preemptive appeal in Clark County between January 1 and July 1 of any assessment year, even if you didn't receive a Notice of Value because your assessed value stayed the same. This is valuable if you believe current market conditions show your property is overvalued compared to recent sales in your area, or if you discovered assessment errors. You don't need to wait for a Notice of Value to exercise your right to appeal. Once you file a preemptive appeal and later receive your actual assessed value, you can update your appeal with additional evidence up to 21 business days before your hearing, or withdraw it if you're satisfied with the assessment.
What if I disagree with the Clark County Board of Equalization's decision on my appeal?
If you disagree with the Clark County Board of Equalization's decision, you have two options for further appeal. First, you can appeal to the Washington State Board of Tax Appeals by filing Form BTA100 within 30 calendar days of the County board's decision mailing date. The form is available on the County Board of Equalization's website or from the State Board of Tax Appeals. Second, you can pay your taxes under protest and petition Superior Court for a refund by filing a lawsuit under RCW Chapter 84.68. It's important to act quickly as the 30-day deadline is strict. If you miss the deadline, you'll need to wait until the next assessment year to file a new appeal.

Official Resources

Clark County Assessor's Office Website →

Official county assessor website with property information, assessment data, and exemption program details.

Clark County Board of Equalization Online Appeal Portal →

File your property tax appeal online, access appeal forms, and find hearing information and deadlines.

Clark County Property Information Center →

Search property records, view assessment data, sales history, building characteristics, and tax information for any property in Clark County.

Washington Department of Revenue - Property Tax Information →

State-level property tax information, exemption guidelines, senior and disabled exemption thresholds, and appeals process resources.

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

Chelan County (Wenatchee)Island County (Oak Harbor)King County (Seattle)Kitsap County (Bremerton)Pierce County (Tacoma)Skagit County (Mount Vernon)
← All Washington property tax appeal info

Sources: https://clark.wa.gov/assessor | https://clark.wa.gov/board-of-equalization | https://clark.wa.gov/internal-services/frequently-asked-questions | https://www.ownwell.com/trends/washington/clark-county | https://dor.wa.gov/taxes-rates/property-tax

Last verified: 2026-07-24