Search kingcounty.gov Search KingCounty.gov Home How do I... Services About King County Departments Property Tax Appeals Preparing your appeal eAppeals FAQ New construction Help with your appeal FAQ Rules of Practice and Procedures About us Meeting Agendas Recruitment Contact us Home Independent bodies Property Tax Appeals How to Appeal the Assessed Value of Your Property Updates from the Board of Appeals and Equalization: Coronavirus / COVID-19 Updates To slow the spread of COVID-19 in our community, in-person services at our office will be closed from now until further notice, but we are happy to assist you by email at BOE@kingcounty.gov and by phone at 206-477-3400. To file an appeal online, please follow the eAppeal links on the upper right side of this page. For the safety of taxpayers and the Board, assessment appeal hearings will be conducted by phone until further notice. Appeals for the 2021 Assessment Year (for Taxes Payable in 2022) The 2021 Official Property Value Notice Cards for all properties in King County will be mailed from the Department of Assessments between April 2021 and November 2021. If you wish to file an appeal on the 2021 assessed value of your property, you must do so within 60 days of the mailing date printed on your Official Property Value Notice Card. Please wait to file your appeal until after you have received and reviewed your 2021 Official Property Value Notice Card. Due to the COVID-19 pandemic and our limited presence in our office, it is recommended that you file online using the eAppeals link at the upper right of this page to avoid any processing delays. The Late Filing Period for the 2020 Assessment Year (for taxes Payable in 2021) is Now Closed A real property appeal for your 2020 value can only be accepted if it is submitted with an Assessor’s notice of a change in value that was issued by the Assessor in the last 60 days, or a request to reconvene (use DOR code 07) can be accepted if you have proof that the Assessor’s value is greater than two times the true and fair market value of your property. Tips for filing an appeal: File online using eAppeals! This will allow you to check on the current status of your appeal at any time and allow you to instantly view appeal related documents sent to you by the Board of Equalization and the King County Assessor. Include all evidence with your appeal, or submit it as soon as possible. An early submission will increase the possibility of receiving a reduction offer from the Assessor without having to attend a hearing. Examples of useful types of evidence include but are not limited to: Sales info of similar properties with sales dates close to the valuation date Professional cost estimates to fix any structural defects or maintenance issues Recorded documents that reference any easements or other restrictions on the property Official communications or documentation from city, county, or an environmental agency confirming environmentally critical areas exist on the site, and/ or any development limitations affecting the property Request an expedited hearing. Hearings are generally scheduled in the order the appeals are received; however, once you 1) complete your evidence submission and 2) you have received the Assessor’s Response, you will be eligible for an expedited hearing. To request an expedited hearing, please email BOE@kingcounty.gov. Factual Error Corrections – When an Appeal May Not Be Required If you feel a mistake has been made in valuing your property, it is recommended that you contact the Department of Assessments directly before filing an appeal at (206) 296-7300 or Assessor.Info@KingCounty.gov. You can review your property parcel/account information online using eReal Property at Assessor-Online Services or with the Assessor’s staff to make sure an error has not been made. More information When to File an Appeal - Within 60 Days of the Mailing Date of your Official Property Value Notice The Department of Assessments will be mailing Official Property Value Notice1 cards for the 2020 assessment year between May and November 2020. Your 2019 assessment value will determine the amount of taxes you pay in 2020 (the first half of your taxes will be due in April, and the second half in October). Taxpayers who believe the assessed value of their property exceeds its fair market value may file a petition form (or file online using eAppeals) during the 60 calendar day period following the mailing date printed on their property’s 2020 value notice. Petitions must either be postmarked, hand delivered to the BOE’s office, or filed online by the latter of July 1st of the assessment year2 OR within sixty 60 calendar from the mailing date printed on the value notice (or other notice of determination) {WAC 458-14-056(2) and WAC 458-14-056(4)}. Please note the BOE does not accept petitions via fax or email. To lookup the appeal filing due date for a specific property, go to: https://blue.kingcounty.gov/assessor/eappeals/RPLookup.aspx, and enter in your property address or parcel. Once you have selected your property, your appeal due date will be shown. If the year for the due date displayed still shows 2019, then your 2020 assessment value change notice has not yet been mailed by the Department of Assessments. Please wait to file appeal your 2020 assessment appeal until after you receive your 2020 valuation notice. 1 Click here to see an example of an Official Property Value Notice card 2 Assessment year is the year before the tax is due (ex. 2020 assessment determines taxes payable in 2021, thus the 2020 assessment year corresponds to the 2021 tax year). More information How to Appeal There are two options to file an appeal with the BOE: File online using eAppeals: To file online visit eAppeals to learn about how property is assessed and file a real property appeal if you decide it is necessary. (Click here to review the online appeal process.) eAppeals can only be used to appeal real property assessments. OR Mail or hand deliver two sets of the BOE’s petition form, any attachments, and/ or supporting evidence to the following address: King County Board of Equalization 500 Fourth Avenue, Room 510 Seattle, WA 98104-2306 For real property appeals, use the real property petition form and for personal property appeals, use the personal property petition form. These forms and the forms other types of appeals, can be found in the “Print appeals forms” section on the right side of this page. All documents must be filed in duplicate. Petitions either must be postmarked, hand delivered to the BOE’s office, or filed online by the latter of July 1st of the assessment year2 OR within sixty 60 calendar from the mailing date printed on the value notice (or other notice of determination). More information What Happens Next - Assessor’s Response to Your Appeal When you submit your petition to the BOE, the staff processes your petition, sends you an acknowledgement letter, and forwards the copy of your petition to the Assessor’s Office for their review and response. More information What Happens Next - Additional Information on the Appeal Process For additional information review the Preparing Your Appeal and FAQ links located in the navigation bar to the left. File your appeal online Invalid Appeal Reasons Print appeals forms Real Property Petition form (PDF) Real property includes single-family residences, vacant land, commercial real estate, etc. Personal Property Petition form (PDF) Personal property includes business equipment, commercial equipment, mobile homes, and floating homes. Current Use Petition form (PDF) For appealing (1) denial of an application from the Assessor, (2) removal from the Current Use or Forest Land programs, and/or (3) the Current Use valuation. Use Real Property Petition Form to appeal appraised or market value. Exemption Petition form (PDF) For appealing the Assessor’s Exemption, Deferral, or Destroyed Property Determination, including Senior Citizen Exemption determination to deny the exemption. Hearing Participation form (PDF) For withdrawing your appeal, requesting a one-time hearing reschedule, requesting an alternative hearing format, or requesting any special accommodations. Authorization of Agent form (PDF) For designating an individual person or an entity to act as your representative on your property tax appeal. The following forms may be used when an appeal has not been filed timely: Request to Reconvene (PDF) New Purchaser (PDF) Affidavit of No Notice (PDF) Assessor Unaware (PDF) Waiver of Filing Deadline (PDF) Valid Reasons for Granting a Waiver Last Updated January 15, 2021 Share Tweet Print Information for... Do more online Get help Español Information for Residents Businesses Job seekers Volunteers King County employees Do more online Trip Planner Property tax information & payment Jail inmate look up Parcel viewer or iMap Public records More online tools... Get help Contact us Customer service Phone list Employee directory Subscribe to alerts Languages En Español © King County, WA 2021 Privacy Accessibility Terms of use