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Urban Forestry
Arborist Unit
Landscape Architect Unit
Field Operations Unit
206-684-TREE (8733)
Free Street Trees
Street Tree Planting Procedures
Urban Forestry Permits
Tree Service Companies With An Annual Permit
Tree Pruning Guide
Seasonal Tree Care
Utility/Tree Inspections
Heritage Tree Program
Seattle Tree Inventory
Landscape Architecture & Green Stormwater Infrastructure
Urban Forestry Class and Resources
A City Among the Trees
Traffic Circles

Tree Ordinance and Street Tree Manual Standards and Specifications

The Seattle Department of Transportation’s Urban Forestry Section’s update to the Street Tree Ordinance, which was last revised in February of 1961 (Ordinance #90047).  It was passed by Full Council: April 29, 2013 as Council Bill Number 117745 – Ordinance Number 124166. This document was drafted with input from an advisory panel consisting of citizens, commercial arborists and city staff from several departments. The intent of the ordinance update is to provide greater protection to street trees, and to codify current policies and procedures.

Linked below is the proposed SDOT Director’s Rule for the Street Tree Manual as the support manual to the Street Tree Ordinance.

Proposed new rule:   Seattle Department of Transportation
Proposed SDOT DR 3-2014 Street Tree Manual
Director’s Rule Implementing Ordinance 1241466



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