The Department of Planning & Development (DPD) administers and enforces regulations related to development that affects trees. The Seattle Department of Transportation (SDOT) regulates trees in the street rights-of-way. The Parks Department oversees all trees on park property. Tree protection regulations vary depending on the zoning of your property, if your property is in an Environmentally Critical Area, if you are building an addition or new construction, or if you have any trees over 6” in diameter. To learn more about our regulations follow the links.
City tree regulation overview
Tree protection code
Weeds and overgrown vegetation code
Street tree planting procedure
Street tree pruning or removal permit application
Seattle Parks & Recreation Department tree policy