A large Sammamish property tax increase can come from King County's annual reassessment and Eastside value pressure, but the notice still matters.
A big Sammamish increase is not automatically wrong, but it is not automatically right either. King County reassesses every year, and Eastside values can move quickly. The appeal question starts when the 2026 Official Property Value Notice puts a number on the home that feels ahead of reality.
Why did Sammamish property taxes go up?
The tax bill follows the assessed value, the local rate stack, and voter-approved levies. In Sammamish, the assessed-value piece can be large enough to dominate the conversation, especially where newer homes and view premiums pull the city narrative upward.
What does the 2026 increase change?
For a personalized Fair Appeal review of your Sammamish home, enter your address on the homepage; the review is free, and FairAppeal only collects a percentage of first-year tax savings when the appeal actually wins. The official property tax appeal deadline rule is published by the King County Board of Equalization.
Related King County guides: 2026 King County appeal deadline, Sammamish property tax bill too high, Auburn property taxes went up a lot. For broader context, see the King County area guide, or browse all FairAppeal articles.