Database of all active Tree Service Providers registered to do business in Seattle and have met the registration requirements for the Seattle Department of Construction & Inspections (SDCI) registry for tree work on private property, for the Seattle Department of Transportation’s (SDOT) registry for tree work in the public right-of-way, or both. All commercial tree work on private property, including removal, reportable work, or consulting services must be conducted by a SDCI registered tree service provider. All major pruning or tree removal work within the public right-of-way must be conducted by a SDOT registered tree service provider.