Routine tree pruning in Kirkland needs no permit, but major topping or removing 30 percent or more of a significant or heritage tree canopy requires review under KZC Chapter 95.
Kirkland regulates tree management through Kirkland Zoning Code Chapter 95 (Tree Management and Required Landscaping). Routine maintenance pruning of trees on private property does not require a permit, but significant pruning, topping, or removal of 30 percent or more of the live crown of a significant tree (typically 6 inches or greater DBH) or any portion of a designated heritage tree requires consultation with the Planning Department. Heritage trees and exceptional specimen trees are mapped and protected citywide. Pruning that functionally destroys a tree is treated as removal and may trigger replacement mitigation. Trees within required landscape buffers, right-of-way trees, and trees in critical areas or shoreline jurisdiction face additional oversight. For trees in utility easements, Puget Sound Energy and City of Kirkland utility crews may perform line clearance pruning. ISA-certified arborists are strongly recommended for any significant pruning, and hazardous tree work requires permits or emergency authorization.
Violation of KZC 95 tree protection can result in civil fines, mandatory replacement plantings, and stop-work orders; illegal topping of protected trees may incur per-inch penalties.
Kirkland, WA
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Side-by-side rule comparisons with other cities in King County.
See how other cities in King County handle tree trimming.
See how Kirkland's tree trimming rules stack up against other locations.
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