Property Tax Appeal — Seattle, King County

Seattle has 160,367 residential properties in the King County assessment roll. Recent comparable sales average $1,185,245. If your assessed value is higher than what similar homes are selling for, you may be overpaying property taxes.

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Seattle Property Stats

Total Properties

160,367

Average Home Size

1,921 sq ft

Average Year Built

1956

Average Bedrooms

3.2

Average Bathrooms

2.0

Year Built Range

1900 — 2026

Recent Sales in Seattle

Comparable Sales on File

18,025

Average Sale Price

$1,185,245

Average Price per Sq Ft

$612

These numbers are based on arm's-length residential sales in King County records. Your specific property may differ — run a free check above for personalized comps.

ZIP Codes in Seattle

98115 (14,393) 98103 (12,028) 98117 (11,620) 98118 (11,546) 98125 (9,222) 98144 (7,081) 98116 (6,512) 98105 (6,336) 98199 (6,222) 98106 (6,105)

How to Appeal Property Taxes in Seattle

Property tax appeals in Seattle follow the same King County process. You have until July 1 each year to file with the Board of Equalization. The key to a successful appeal is strong comparable sales evidence — homes similar to yours that sold for less than your assessed value. Our tool finds those comps automatically and generates professional appeal documents you can file in about 10 minutes.

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