Sammamish Tree Removal Permit & Ordinance Guide
King County, Washington
Protected Tree Definition
Significant tree: 6+ inches DBH for evergreen species, 8+ inches DBH for deciduous species. Landmark trees designated separately for exceptional size or significance. Retention requirements vary by zone and lot size.
Heritage / Landmark Trees
Landmark trees designated for exceptional size, species, age, or community value.
Permit Requirements
Tree Retention Plan and Tree Replacement Plan required during development. Tree removal permits required for significant trees outside approved development activity.
Who can apply: Property owner or authorized agent with arborist report
Required Report Sections
Tree inventory with DBH, species, condition, retention plan, replacement plan
Replacement Requirements
Based on retention percentage (typically 30-35% for residential, varies by zone)
On-site replacement required; fee-in-lieu paid to tree fund when infeasible.
Fees & Fines
Processing Time
4-8 weeks
Required Certifications
ISA Certified Arborist
Municipal Code
Sammamish Municipal Code 21A.35 (Tree Protection)
View full ordinanceContact
Community Development
(425) 295-0500
Nearby Cities in King County
Other Washington cities
Compare with nearby cities
Data last verified: April 2026. This information is provided as a reference. Always verify requirements directly with Sammamish before submitting permits or reports.
Ready to apply? How to apply for a permit in Sammamish →
See Washington replacement obligations compared: How Sammamish's replacement ratio ranks in Washington →
See Washington heritage criteria compared: How Sammamish's heritage designation ranks in Washington →
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