June 1, 2026 [recipient name] [recipient address] Re: Formal Appeal of [tax year] Assessed Value Parcel / APN: [parcel number] Property: [property address] Assessed Value: $[assessed value] Owner's Opinion of Value: $[claimed value] To the Assessor / Board of Equalization: I, [user full name], the owner of record of the above-referenced property, hereby file a formal appeal of the [tax year] assessed value pursuant to applicable state and county property-tax appeal procedures. I respectfully request that the assessed value be reduced from $[assessed value] to $[claimed value], supported by the comparable-sales analysis below. COMPARABLE SALES ANALYSIS (Sales-Comparison Approach) Comparable 1: [comp 1] Comparable 2: [comp 2] Comparable 3: [comp 3] These arm's-length transactions, occurring within the assessment lookback window and within the immediate neighborhood of the subject property, indicate that the current assessed value materially exceeds fair market value as of the relevant lien date. PROPERTY CONDITION [condition notes] Material defects, deferred maintenance, and functional obsolescence reduce the property's market value below the mass-appraisal estimate produced by the assessor's CAMA model. STATEMENT OF FACTS [facts] REQUESTED RELIEF [desired outcome] Specifically, I request that the Assessor: (i) reduce the [tax year] assessed value of parcel [parcel number] to $[claimed value]; (ii) issue a corrected assessment notice; and (iii) refund or credit any overpayment of property taxes already remitted for the [tax year] tax year. I am available to attend an informal review or formal Board of Equalization hearing and will produce supporting documentation, photographs of the comparable sales, and additional market evidence as required. Sincerely, [user full name] [user address]
Assessment Appeal · King County, Washington
Did the King County assessor artificially inflate your home value?
Generate a formal property tax valuation dispute to lower your annual tax bill.
When county tax assessors update property values, they rely on mass-appraisal algorithms that frequently overvalue individual homes. If the assessor failed to account for significant defects affecting your home — foundation issues, roof damage, outdated systems, or environmental hazards, you do not have to accept an inflated tax bill. Use our self-help software utility to generate an official Property Assessment Appeal Notice for the King County Board of Equalization.
Your consumer rights: challenging mass-appraisal errors
King County Board of Equalization
King County's volatile real estate market means mass-appraisal models routinely miss neighborhood-level value swings, supporting strong appeal grounds.
July 1 or 60 days after the valuation notice is mailed, whichever is later. Missing this window means you lose the right to contest your bill for the entire year.
Fair market value must reflect a property's actual physical condition. When an assessor uses a generic mass-appraisal that ignores documented defects, the resulting assessment overstates true market value and is subject to correction.
A structured written valuation dispute forces the King County Board of Equalization to review comparable property data in your immediate radius, frequently resulting in a reduction of your property tax basis.
Obtain a recent inspection report identifying defects, photograph each condition issue, gather repair estimates from licensed contractors, and document any code violations or environmental disclosures.
Tax
Property Tax Appeal
The person, company, or agency this letter is addressed to.
✓ Uses the sales-comparison approach assessors are required to consider
- 256-bit Encryption
- Bank-Level Privacy
- No Monthly Subscription
Live preview — updates as you type
Property Condition Defects appeals in other jurisdictions
- Property Condition Defects — Cook County
- Property Condition Defects — Los Angeles County
- Property Condition Defects — Harris County
- Property Condition Defects — Maricopa County
- Property Condition Defects — Miami-Dade County
- Property Condition Defects — New York City