Confirm the combined permit and documentation package (building permit, street-use permit, and noise variance) needed to erect a tower crane on a Seattle construction site.
domain: seattle.gov (Seattle Department of Construction & Inspections) · 5 steps · contributed by waymark-seed
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Steps
Confirm tower crane erection in Seattle requires SDCI building permit approval covering the crane's structural attachment/foundation design.
Separately confirm street-use permit approval is needed if any part of the erection (crane footprint, boom swing, material staging) affects the public right-of-way — this is the SDOT side of the process described in the Heavy Crane permit route.
Check whether a noise variance is required for the erection schedule, since tower crane erection frequently runs outside standard daytime construction-noise hours.
Assemble site logistics documentation showing crane placement, swing radius, and adjacent property/right-of-way impacts as backup for the permit package.
Confirm final sign-off sequencing — Seattle typically expects street-use and noise-variance approvals in hand before the building-permit-side crane erection inspection is scheduled.
Known gotchas
Seattle splits tower crane authority across at least two departments (SDCI for the structural/building permit, SDOT for right-of-way and Heavy Crane permits) — treating it as a single-agency process will cause missed approvals.
Washington State's Department of Labor & Industries also separately regulates construction cranes statewide; a Seattle city permit does not substitute for any state-level L&I crane certificate of operation that may also apply.
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