Kirkland, WA Landscaping Rules: Tree Removal & Heritage Trees (2026)

Kirkland Zoning Code Chapter 95 protects trees citywide. A tree removal permit is required before removing any significant tree measuring 6 inches or greater diameter at breast height (DBH, measured 4.5 feet above grade), and any heritage or exceptional tree regardless of size. Permit applications are reviewed by the Planning Department and typically require an arborist report for larger trees, trees in critical areas, or trees near proposed construction. Removal of significant trees requires replacement planting, typically at a 1:1 ratio for small sites and higher ratios (up to 3:1) for large lots and developments to maintain Kirkland's tree canopy goals. Hazard trees (dead, dying, or imminently failing) can be removed through an expedited or emergency process with arborist documentation. Trees in shoreline jurisdiction along Lake Washington face additional review under the Kirkland Shoreline Master Program. Unpermitted tree removal is one of the most common code enforcement issues in Kirkland and penalties can reach thousands of dollars per tree.