Seattle, WA Parking Rules: Commercial & Oversized Vehicles (2026)
Key Facts
- Restricted hours
- Midnight to 6:00 a.m.
- Width trigger
- Over 80 inches wide
- Exception
- Industrial Zones per Title 23
- Citation
- SMC § 11.72.070
Summary
Seattle bans overnight parking of wide trucks and trailers on residential streets. SMC 11.72.070 forbids parking a truck, trailer or other conveyance over 80 inches wide on any street or alley between midnight and 6 a.m., except in an Industrial Zone.
11.72.070 - Commercial and large size vehicles. No person shall park a vehicle on any street or alley, except in an Industrial Zone as defined in Title 23, between the hours of midnight and six (6) a.m. if the vehicle is a truck and/or trailer or other conveyance which is over eighty (80) inches wide. (Ord. 123420, § 20, 2010; Ord. 108200, § 2(11.72.070), 1979.)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 44 Update 1).
Full Breakdown
070, titled 'Commercial and large size vehicles,' targets the overnight storage of oversize commercial equipment on public streets outside the industrial core. , unless the location is within an Industrial Zone as defined in Title 23 of the Land Use Code. Because Seattle's residential and commercial zones outside the designated industrial areas are excluded from the exception, a commercial truck-tractor, box truck, or semi-trailer cannot legally sit overnight on a residential block or a typical commercial street; it must be moved to an Industrial Zone or off-street.
The section was last amended by Ordinance 123420 in 2010, which added the Industrial Zone carve-out referencing Title 23's zone definitions, replacing an earlier flat prohibition. 72 fine schedule. rule applies everywhere on the street network, not just in signed zones.
Violations & Fines
Parking a truck, trailer, or other conveyance wider than 80 inches on a street or alley outside an Industrial Zone between midnight and 6 a.m. is a parking infraction under SMC 11.72.070, cited at the standard $69 commercial-vehicle parking fine listed in the SMC 11.72 penalty schedule; the vehicle remains subject to citation for each night it stays parked in violation.
Frequently Asked Questions
Can I park my semi-trailer overnight on a Seattle residential street?
Does the overnight truck parking ban apply in Seattle's industrial areas?
How is a violation of Seattle's commercial vehicle parking rule penalized?
Sources & Official References
Other rules in Seattle
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Commercial & Oversized Vehicles in Nearby Cities
How other cities in King County handle commercial & oversized vehicles.