Property Tax Appeal — Newcastle, King County

Newcastle has 3,463 residential properties in the King County assessment roll. Recent comparable sales average $1,757,210. If your assessed value is higher than what similar homes are selling for, you may be overpaying property taxes.

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Newcastle Property Stats

Total Properties
3,463
Average Home Size
2,875 sq ft
Average Year Built
1991
Average Bedrooms
3.9
Average Bathrooms
2.5
Year Built Range
1906 — 2026

Recent Sales in Newcastle

Comparable Sales on File
483
Average Sale Price
$1,757,210
Average Price per Sq Ft
$573

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 Newcastle

98056 (1,955) 98059 (1,154) 98006 (1)

How to Appeal Property Taxes in Newcastle

Property tax appeals in Newcastle 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.