Washington Shed Moving Permit Rules
In Washington, a shed on a trailer needs an oversize permit once it exceeds 8'6" wide or 14' tall. Permits come from the WSDOT Commercial Vehicle Services and typically cost $15–$200 for a single trip.
| Maximum legal width without a permit | 8'6" |
|---|---|
| Maximum legal height without a permit | 14' |
| Issuing agency | WSDOT Commercial Vehicle Services |
| Typical single-trip permit fee | $15–$200 |
| Escort / pilot car requirement | Pilot car above 12' wide on most state routes. |
| Route conditions to plan for | Cascade passes and dense Puget Sound suburban grids |
What this means for your move
Most 10-, 12-, and 14-foot-wide portable buildings exceed the 8'6" legal width in Washington, so a permit is required for nearly any move on public roads. An 8-foot-wide shed usually travels permit-free as long as trailer deck height keeps the total under 14'.
Plan the route around Cascade passes and dense Puget Sound suburban grids. Pilot car above 12' wide on most state routes. Escort vehicles are billed per mile and are typically the largest add-on cost after the haul itself.
Professional shed haulers usually carry annual blanket permits, which removes the per-trip paperwork for the homeowner entirely.
Washington permit FAQs
Do I need a permit to move a shed in Washington?
Yes, if the loaded shed exceeds 8'6" wide or 14' tall you need an oversize permit from the WSDOT Commercial Vehicle Services. Single-trip permits typically run $15–$200.
Who issues oversize shed permits in Washington?
WSDOT Commercial Vehicle Services issues state oversize/overweight permits. Cities and counties may require additional local permits for moves on municipal streets.
Are escort vehicles required in Washington?
Pilot car above 12' wide on most state routes.
Shed movers in Washington
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Compiled from WSDOT Commercial Vehicle Services publications. Confirm current limits with the agency before dispatching a load.